|
|
A307795型 |
| 长度为n的二进制字的数量,子字101的出现次数是子字010出现次数的三倍。 |
|
2
|
|
|
1, 2, 4, 6, 10, 16, 26, 42, 70, 116, 196, 332, 572, 996, 1758, 3134, 5650, 10276, 18836, 34720, 64310, 119582, 223066, 417028, 780876, 1463800, 2746304, 5155556, 9682418, 18189458, 34178904, 64236714, 120749592, 227018306, 426886298, 802872340, 1510325700
(列表;图表;参考;听;历史;文本;内部格式)
|
|
|
抵消
|
0,2
|
|
链接
|
|
|
例子
|
a(8)=70:00000000000000001000000110000011000000111000011001100001110000111000001111000011100011110000111000011111000111100011110001111110001111110010111110111110110111110111000111100010011110001110111110101111111, 10000000, 10000001, 10000011, 10000110, 10000111, 10001100, 10001110, 10001111, 10011000, 10011001, 10011100, 10011110, 10011111, 10101101, 10110101, 11000000, 11000001, 11000011, 11000110, 11000111, 11001100, 11001110, 11001111, 11100000, 11100001, 11100011, 11100110, 11100111, 11110000, 11110001, 11110011, 11111000, 11111001, 11111100, 11111110,11111111
|
|
MAPLE公司
|
b: =proc(n,t,h,c)选项记住`如果`(abs(c)>3*n,0,
`如果`(n=0,1,b(n-1,[1,3,1][t],2,c-`如果`(h=3,3,0))
+b(n-1,2,[1,3,1][h],c+`如果`(t=3,1,0))
结束时间:
a: =n->b(n,1$2,0):
seq(a(n),n=0..50);
|
|
交叉参考
|
|
|
关键词
|
非n
|
|
作者
|
|
|
状态
|
经核准的
|
|
|
|