A271612 - cp's OEIS frontend

A271612 Number of ways to reciprocally link elements of an n X n X n triangular array with themselves or a neighbor, with no more than 3 elements linked to themselves.

n	a(n)
1	1
2	4
3	17
4	114
5	2571
6	42702
7	216318
8	5622392
9	1491326272
10	101843558868
11	1038614548176
12	131929454285752
13	334070494079203752
14	109915013016304822208
15	3147612978951707912144
16	2069163709506683013857472
17	44655320458467210977882177104
18	75051772861714827753881814035744

[1, 4, 17, 114, 2571, 42702, 216318, 5622392, 1491326272, 101843558868, 1038614548176, 131929454285752, 334070494079203752, 109915013016304822208, 3147612978951707912144, 2069163709506683013857472, 44655320458467210977882177104, 75051772861714827753881814035744]

cp's OEIS Frontend

A271612 Number of ways to reciprocally link elements of an n X n X n triangular array with themselves or a neighbor, with no more than 3 elements linked to themselves.

Table of values

List of values