A204342 - cp's OEIS frontend

A204342 a(n) = (-1)^n * Sum_{2m + 1 | 2n + 1} (-1)^m (2*m + 1)^4.

n	a(n)
0	1
1	80
2	626
3	2400
4	6481
5	14640
6	28562
7	50080
8	83522
9	130320
10	192000
11	279840
12	391251
13	524960
14	707282
15	923520
16	1171200
17	1502400
18	1874162
19	2284960
20	2825762
21	3418800
22	4057106
23	4879680
24	5762401
25	6681760
26	7890482
27	9164640
28	10425600

[1, 80, 626, 2400, 6481, 14640, 28562, 50080, 83522, 130320, 192000, 279840, 391251, 524960, 707282, 923520, 1171200, 1502400, 1874162, 2284960, 2825762, 3418800, 4057106, 4879680, 5762401, 6681760, 7890482, 9164640, 10425600]

cp's OEIS Frontend

A204342 a(n) = (-1)^n * Sum_{2m + 1 | 2n + 1} (-1)^m (2*m + 1)^4.

Table of values

List of values

cp's OEIS Frontend

A204342 a(n) = (-1)^n * Sum_{2*m + 1 | 2*n + 1} (-1)^m (2*m + 1)^4.

Table of values

List of values

A204342 a(n) = (-1)^n * Sum_{2m + 1 | 2n + 1} (-1)^m (2*m + 1)^4.