A208394 - cp's OEIS frontend

A208394 Number of 3 X n 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

n	a(n)
1	5
2	122
3	3042
4	76806
5	1937736
6	48890520
7	1233536544
8	31122868320
9	785248636032
10	19812294175104
11	499876067713536
12	12612173071468032
13	318212692821854208
14	8028697140386371584
15	202568845385856983040
16	5110933493125207056384

[5, 122, 3042, 76806, 1937736, 48890520, 1233536544, 31122868320, 785248636032, 19812294175104, 499876067713536, 12612173071468032, 318212692821854208, 8028697140386371584, 202568845385856983040, 5110933493125207056384]

cp's OEIS Frontend

A208394 Number of 3 X n 0..2 arrays with new values 0..2 introduced in row major order and no element equal to more than two of its immediate leftward or upward or right-upward antidiagonal neighbors.

Table of values

List of values