A253000 - cp's OEIS frontend

A253000 Number of n X 4 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 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	1
3	1
4	1
5	69
6	1132
7	7235
8	25233
9	63135
10	129133
11	231419
12	378185
13	577623
14	837925
15	1167283
16	1573889
17	2065935
18	2651613
19	3339115
20	4136633
21	5052359
22	6094485
23	7271203
24	8590705
25	10061183
26	11690829
27	13487835
28	15460393
29	17616695
30	19964933
31	22513299

[1, 1, 1, 1, 69, 1132, 7235, 25233, 63135, 129133, 231419, 378185, 577623, 837925, 1167283, 1573889, 2065935, 2651613, 3339115, 4136633, 5052359, 6094485, 7271203, 8590705, 10061183, 11690829, 13487835, 15460393, 17616695, 19964933, 22513299]

cp's OEIS Frontend

A253000 Number of n X 4 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 3 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