A199906 - cp's OEIS frontend

A199906 Number of -5..5 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	60
4	256
5	1836
6	12872
7	77874
8	547604
9	3784512
10	25525476
11	179010266
12	1249682864
13	8709865930
14	61360521500
15	432263649142
16	3049721406636
17	21595190691722
18	153069769124720
19	1086568858888600
20	7726348605601340

[1, 8, 60, 256, 1836, 12872, 77874, 547604, 3784512, 25525476, 179010266, 1249682864, 8709865930, 61360521500, 432263649142, 3049721406636, 21595190691722, 153069769124720, 1086568858888600, 7726348605601340]

cp's OEIS Frontend

A199906 Number of -5..5 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