A252931 - cp's OEIS frontend

A252931 Number of n X n nonnegative integer arrays with upper left 0 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.

n	a(n)
1	1
2	5
3	44
4	711
5	17962
6	578342
7	21312696
8	857248091
9	36723156004
10	1650365159314
11	77015673357558
12	3704833216794534
13	182732875391479366
14	9203662331845611018
15	471886132793225715184
16	24568007717042452684419
17	1296265434331412271116602

[1, 5, 44, 711, 17962, 578342, 21312696, 857248091, 36723156004, 1650365159314, 77015673357558, 3704833216794534, 182732875391479366, 9203662331845611018, 471886132793225715184, 24568007717042452684419, 1296265434331412271116602]

cp's OEIS Frontend

A252931 Number of n X n nonnegative integer arrays with upper left 0 and every value within 3 of its king move distance from the upper left and every value increasing by 0 or 1 with every step right, diagonally se or down.

Table of values

List of values