A252978 - cp's OEIS frontend

A252978 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 increasing by 0 or 1 with every step right, diagonally se or down.

n	a(n)
1	1
2	1
3	1
4	33
5	266
6	851
7	1836
8	3221
9	5006
10	7191
11	9776
12	12761
13	16146
14	19931
15	24116
16	28701
17	33686
18	39071
19	44856
20	51041
21	57626
22	64611
23	71996
24	79781
25	87966
26	96551
27	105536
28	114921
29	124706
30	134891
31	145476
32	156461
33	167846
34	179631
35	191816
36	204401
37	217386

[1, 1, 1, 33, 266, 851, 1836, 3221, 5006, 7191, 9776, 12761, 16146, 19931, 24116, 28701, 33686, 39071, 44856, 51041, 57626, 64611, 71996, 79781, 87966, 96551, 105536, 114921, 124706, 134891, 145476, 156461, 167846, 179631, 191816, 204401, 217386]

cp's OEIS Frontend

A252978 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 increasing by 0 or 1 with every step right, diagonally se or down.

Table of values

List of values