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A189814号 T(n,k)=(n+1)X(k+1)网格上的直角三角形数 8
4, 14, 14, 28, 44, 28, 46, 94, 94, 46, 68, 158, 200, 158, 68, 94, 238, 342, 342, 238, 94, 124, 330, 524, 596, 524, 330, 124, 158, 434, 732, 926, 926, 732, 434, 158, 196, 550, 972, 1308, 1444, 1308, 972, 550, 196, 238, 678, 1236, 1754, 2060, 2060, 1754, 1236, 678 (列表;桌子;图表;参考;;历史;文本;内部格式)
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表格开始
...4..14...28...46...68...94...124...158...196...238...284...334...388...446
..14..44...94..158..238..330...434...550...678...818...970..1134..1310..1498
..28..94..200..342..524..732...972..1236..1524..1840..2180..2544..2932..3344
..46.158..342..596..926.1308..1754..2250..2794..3390..4026..4702..5426..6190
..68.238..524..926.1444.2060..2784..3596..4492..5470..6516..7630..8820.10070
..94.330..732.1308.2060.2960..4032..5250..6604..8082..9684.11388.13220.15144
.124.434..972.1754.2784.4032..5520..7224..9128.11218.13500.15938.18568.21328
.158.550.1236.2250.3596.5250..7224..9496.12044.14860.17948.21266.24852.28634
.196.678.1524.2794.4492.6604..9128.12044.15332.18990.23012.27354.32052.37032
.238.818.1840.3390.5470.8082.11218.14860.18990.23596.28678.34190.40166.46522
链接
配方奶粉
柱的经验
k=1:a(n)=2*n^2+4*n-2
k=2:a(n)=6*n^2+26*n-42,对于n>3
k=3:a(n)=12*n^2+88*n-240,对于n>8
k=4:当n>15时,a(n)=20*n^2+228*n-930
k=5:a(n)=30*n^2+468*n-2478,对于n>24
k=6:a(n)=42*n^2+886*n-6080,对于n>35
k=7:a(n)=56*n^2+1480*n-12216,对于n>48
k=8:a(n)=72*n^2+2344*n-23112,对于n>63
k=9:a(n)=90*n^2+3516*n-40434,对于n>80
k=10:a(n)=110*n^2+5090*n-67626,对于n>99
k=11:a(n)=132*n^2+7016*n-105016,对于n>120
k=12:a(n)=156*n^2+9564*n-162094,对于n>143
k=13:a(n)=182*n^2+12572*n-236518,对于n>168
k=14:a(n)=210*n^2+16230*n-337676,对于n>195
例子
n=3k=3的一些解
..2..3....2..1....0..2....0..1....3..1....1..3....4..2....2..2....1..1....3..2
..1..2....0..3....0..3....0..2....1..3....1..2....2..1....2..1....0..2....1..3
..4..1....3..2....4..2....5..1....5..3....4..3....5..0....5..2....2..2....2..0
交叉参考
第1列是-A147973号(n+4)
对角线为A077435号(n+1)
关键词
非n,
作者
R.H.哈丁2011年4月28日
状态
经核准的

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上次修改时间:2024年4月26日07:58 EDT。包含371991个序列。(在oeis4上运行。)