A199907 - cp's OEIS frontend

A199907 Number of -6..6 arrays x(0..n-1) of n elements with zero sum, and adjacent elements not equal modulo three (with -1 modulo 3 = 2).

n	a(n)
1	1
2	8
3	84
4	448
5	3196
6	29864
7	216530
8	1699268
9	14546928
10	116482068
11	950119628
12	7969545520
13	65812921362
14	546169532636
15	4575686136942
16	38231452993064
17	320077674218718
18	2689588505089064
19	22606933344228744
20	190257872374203952

[1, 8, 84, 448, 3196, 29864, 216530, 1699268, 14546928, 116482068, 950119628, 7969545520, 65812921362, 546169532636, 4575686136942, 38231452993064, 320077674218718, 2689588505089064, 22606933344228744, 190257872374203952]

cp's OEIS Frontend

A199907 Number of -6..6 arrays x(0..n-1) of n elements with zero sum, and adjacent elements not equal modulo three (with -1 modulo 3 = 2).

Table of values

List of values