A180979-OEIS公司

A180979号

T（n，k）=楼层（（n*k）/2）为1且行和列按字典序非递减顺序排列的nXk二元矩阵的数目

1, 1, 1, 1, 3, 1, 1, 4, 4, 1, 1, 7, 10, 7, 1, 1, 9, 27, 27, 9, 1, 1, 13, 58, 121, 58, 13, 1, 1, 16, 122, 483, 483, 122, 16, 1, 1, 21, 238, 1751, 3680, 1751, 238, 21, 1, 1, 25, 433, 5694, 24779, 24779, 5694, 433, 25, 1, 1, 31, 737, 16870, 152453, 326650, 152453, 16870, 737

(列表;桌子;图表;参考;听;历史;文本;内部格式)

抵消

1,5

表格开始

.1..1....1......1........1..........1............1..............1

.1..3....4......7........9.........13...........16.............21

.1..4...10.....27.......58........122..........238............433

.1..7...27....121......483.......1751.........5694..........16870

.1..9...58....483.....3680......24779.......152453.........804538

.1.13..122...1751....24779.....326650......3826202.......39589830

.1.16..238...5694...152453....3826202.....91271990.....1819250859

.1.21..433..16870...804538...39589830...1819250859....74872992399

.1.25..737..46014..3969107..364013320..34112520431..2730227923892

.1.31.1208.116842.17135660.3005372641.534428405524.88478723671041

链接

R.H.哈丁，n=1..220时的n，a（n）表

例子

3X4的所有解决方案

..0..0..0..0....0..0..0..1....0..0..0..1....0..0..0..1....0..0..0..1

..0..0..1..1....0..0..1..1....0..0..1..0....0..0..1..1....0..0..0..1

..1..1..1..1....0..1..1..1....1..1..1..1....1..1..1..0....1..1..1..1

...

..0..0..0..1....0..0..0..0....0..0..0..0....0..0..0..1....0..0..0..1

..0..0..1..1....0..1..1..1....0..1..1..1....0..1..1..0....0..1..1..0

..1..1..0..1....0..1..1..1....1..0..1..1....0..1..1..1....1..0..1..1

...

..0..0..0..1....0..0..0..1....0..0..0..1....0..0..1..1....0..0..1..1

..0..1..1..1....0..1..1..1....0..1..1..0....0..0..1..1....0..0..1..1

..1..0..1..0....1..0..0..1....1..1..1..0....0..0..1..1....0..1..0..1

...

..0..0..1..1....0..0..1..1....0..0..1..1....0..0..1..1....0..0..1..1

..0..0..1..1....0..1..0..0....0..1..0..1....0..1..0..1....0..1..0..0

..1..1..0..0....0..1..1..1....0..1..1..0....0..1..0..1....1..0..1..1

...

..0..0..1..1....0..0..1..1....0..0..1..1....0..0..1..1....0..0..1..1

..0..1..0..1....0..1..1..1....0..1..0..1....0..1..0..0....0..1..0..1

..1..0..1..0....1..0..0..0....1..0..0..1....1..1..0..1....1..1..0..0

...

..0..0..1..1....0..1..1..1

..1..1..0..0....1..0..0..0

..1..1..0..0....1..0..0..1

交叉参考

上下文中的序列：A026747号 A026374号 A174032号*A102716号 A173076号 A134510号

相邻序列：A180976号 1980年 A180978号*A180980型 A180981号 A180982号

关键词

非n,表

作者

R.H.哈丁2010年9月30日

状态

经核准的