A252933 - cp's OEIS frontend

A252933 Number of n X 3 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	4
2	13
3	44
4	153
5	494
6	1343
7	3016
8	5833
9	10114
10	16179
11	24348
12	34941
13	48278
14	64679
15	84464
16	107953
17	135466
18	167323
19	203844
20	245349
21	292158
22	344591
23	402968
24	467609
25	538834
26	616963
27	702316
28	795213
29	895974
30	1004919
31	1122368
32	1248641
33	1384058

[4, 13, 44, 153, 494, 1343, 3016, 5833, 10114, 16179, 24348, 34941, 48278, 64679, 84464, 107953, 135466, 167323, 203844, 245349, 292158, 344591, 402968, 467609, 538834, 616963, 702316, 795213, 895974, 1004919, 1122368, 1248641, 1384058]

cp's OEIS Frontend

A252933 Number of n X 3 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