A208950 - cp's OEIS frontend

A208950 a(4n) = n(16n^2-1)/3, a(2n+1) = n(n+1)(2n+1)/6, a(4n+2) = (4n+1)(4n+2)(4*n+3)/6.

n	a(n)
0	0
1	0
2	1
3	1
4	5
5	5
6	35
7	14
8	42
9	30
10	165
11	55
12	143
13	91
14	455
15	140
16	340
17	204
18	969
19	285
20	665
21	385
22	1771
23	506
24	1150
25	650
26	2925
27	819
28	1827
29	1015
30	4495
31	1240
32	2728
33	1496
34	6545
35	1785
36	3885
37	2109
38	9139
39	2470
40	5330
41	2870
42	12341
43	3311
44	7095
45	3795
46	16215
47	4324

[0, 0, 1, 1, 5, 5, 35, 14, 42, 30, 165, 55, 143, 91, 455, 140, 340, 204, 969, 285, 665, 385, 1771, 506, 1150, 650, 2925, 819, 1827, 1015, 4495, 1240, 2728, 1496, 6545, 1785, 3885, 2109, 9139, 2470, 5330, 2870, 12341, 3311, 7095, 3795, 16215, 4324]

cp's OEIS Frontend

A208950 a(4n) = n(16n^2-1)/3, a(2n+1) = n(n+1)(2n+1)/6, a(4n+2) = (4n+1)(4n+2)(4*n+3)/6.

Table of values

List of values

cp's OEIS Frontend

A208950 a(4*n) = n*(16*n^2-1)/3, a(2*n+1) = n*(n+1)*(2*n+1)/6, a(4*n+2) = (4*n+1)*(4*n+2)*(4*n+3)/6.

Table of values

List of values

A208950 a(4n) = n(16n^2-1)/3, a(2n+1) = n(n+1)(2n+1)/6, a(4n+2) = (4n+1)(4n+2)(4*n+3)/6.