A252999 - cp's OEIS frontend

A252999 Number of n X 3 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	0
2	0
3	0
4	1
5	34
6	279
7	1028
8	2601
9	5318
10	9499
11	15464
12	23533
13	34026
14	47263
15	63564
16	83249
17	106638
18	134051
19	165808
20	202229
21	243634
22	290343
23	342676
24	400953
25	465494
26	536619
27	614648
28	699901
29	792698
30	893359
31	1002204
32	1119553
33	1245726
34	1381043
35	1525824

[0, 0, 0, 1, 34, 279, 1028, 2601, 5318, 9499, 15464, 23533, 34026, 47263, 63564, 83249, 106638, 134051, 165808, 202229, 243634, 290343, 342676, 400953, 465494, 536619, 614648, 699901, 792698, 893359, 1002204, 1119553, 1245726, 1381043, 1525824]

cp's OEIS Frontend

A252999 Number of n X 3 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