A249190-OEIS公司

A249190型

长度为n+6 0..1且没有七个连续项的数组的数量，其中任意三个元素之和的四倍等于其余四个元素之总和的三倍。

三

126, 250, 496, 984, 1952, 3872, 7680, 15234, 30218, 59940, 118896, 235840, 467808, 927936, 1840638, 3651058, 7242176, 14365456, 28495072, 56522336, 112116736, 222392834, 441134610, 875027044, 1735688632, 3442882192, 6829242048

(列表;图表;参考;听;历史;文本;内部格式)

抵消

1,1

第1列，共列A249197号.

链接

R.H.哈丁，n=1..210时的n，a（n）表

配方奶粉

经验：a（n）=a（n-1）+a（n-2）+a。

经验公式：2*x*（63+62*x+60*x^2+56*x^3+48*x^4+32*x^5）/（1-x-x^2-x^3-x^4-x^5-x^6）-科林·巴克2018年2月24日

例子

n=6的一些解决方案：

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

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

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

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

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

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

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

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

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

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

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

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

交叉参考

囊性纤维变性。A249197号.

上下文中的序列：A254370型 A325932型 A109024号*A356143型 A254465号 A063334号

相邻序列：A249187号 A249188型 A249189号*A249191号 A249192号 A249193型

关键词

非n

作者

R.H.哈丁2014年10月23日

状态

经核准的