A253218 - cp's OEIS frontend

A253218 Number of n X 3 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 2 and every value within 2 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	19
5	102
6	263
7	504
8	825
9	1226
10	1707
11	2268
12	2909
13	3630
14	4431
15	5312
16	6273
17	7314
18	8435
19	9636
20	10917
21	12278
22	13719
23	15240
24	16841
25	18522
26	20283
27	22124
28	24045
29	26046
30	28127
31	30288
32	32529
33	34850
34	37251
35	39732
36	42293
37	44934
38	47655
39	50456
40	53337
41	56298

[1, 1, 1, 19, 102, 263, 504, 825, 1226, 1707, 2268, 2909, 3630, 4431, 5312, 6273, 7314, 8435, 9636, 10917, 12278, 13719, 15240, 16841, 18522, 20283, 22124, 24045, 26046, 28127, 30288, 32529, 34850, 37251, 39732, 42293, 44934, 47655, 50456, 53337, 56298]

cp's OEIS Frontend

A253218 Number of n X 3 nonnegative integer arrays with upper left 0 and lower right its king-move distance away minus 2 and every value within 2 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