A350236 - cp's OEIS frontend

A350236 a(n) is the sum of the entries in an n X n X n 3D matrix whose elements start at 1 in the corner cells and increase by 1 with each step towards the center.

n	a(n)
1	1
2	8
3	54
4	160
5	425
6	864
7	1666
8	2816
9	4617
10	7000
11	10406
12	14688
13	20449
14	27440
15	36450
16	47104
17	60401
18	75816
19	94582
20	116000
21	141561
22	170368
23	204194
24	241920
25	285625
26	333944
27	389286
28	450016
29	518897
30	594000
31	678466
32	770048
33	872289
34	982600
35	1104950
36	1236384
37	1381321

[1, 8, 54, 160, 425, 864, 1666, 2816, 4617, 7000, 10406, 14688, 20449, 27440, 36450, 47104, 60401, 75816, 94582, 116000, 141561, 170368, 204194, 241920, 285625, 333944, 389286, 450016, 518897, 594000, 678466, 770048, 872289, 982600, 1104950, 1236384, 1381321]

cp's OEIS Frontend

A350236 a(n) is the sum of the entries in an n X n X n 3D matrix whose elements start at 1 in the corner cells and increase by 1 with each step towards the center.

Table of values

List of values