A308025 - cp's OEIS frontend

A308025 a(n) = n(2n - 3 - (-1)^n)(5n - 2 + (-1)^n)/16.

n	a(n)
1	0
2	0
3	9
4	19
5	55
6	87
7	168
8	234
9	378
10	490
11	715
12	885
13	1209
14	1449
15	1890
16	2212
17	2788
18	3204
19	3933
20	4455
21	5355
22	5995
23	7084
24	7854
25	9150
26	10062
27	11583
28	12649
29	14413
30	15645
31	17670
32	19080
33	21384
34	22984
35	25585
36	27387
37	30303
38	32319
39	35568
40	37810
41	41410
42	43890
43	47859

[0, 0, 9, 19, 55, 87, 168, 234, 378, 490, 715, 885, 1209, 1449, 1890, 2212, 2788, 3204, 3933, 4455, 5355, 5995, 7084, 7854, 9150, 10062, 11583, 12649, 14413, 15645, 17670, 19080, 21384, 22984, 25585, 27387, 30303, 32319, 35568, 37810, 41410, 43890, 47859]

cp's OEIS Frontend

A308025 a(n) = n(2n - 3 - (-1)^n)(5n - 2 + (-1)^n)/16.

Table of values

List of values

cp's OEIS Frontend

A308025 a(n) = n*(2*n - 3 - (-1)^n)*(5*n - 2 + (-1)^n)/16.

Table of values

List of values

A308025 a(n) = n(2n - 3 - (-1)^n)(5n - 2 + (-1)^n)/16.