A278407 - cp's OEIS frontend

A278407 G.f.: x^2 * f''(x), where f(x) = Product_{k>=1} (1 + x^k).

n	a(n)
0	0
1	0
2	2
3	12
4	24
5	60
6	120
7	210
8	336
9	576
10	900
11	1320
12	1980
13	2808
14	4004
15	5670
16	7680
17	10336
18	14076
19	18468
20	24320
21	31920
22	41118
23	52624
24	67344
25	85200
26	107250
27	134784
28	167832
29	207872
30	257520
31	316200
32	386880
33	473088
34	574464
35	696150
36	841680
37	1012320
38	1214784
39	1455324

[0, 0, 2, 12, 24, 60, 120, 210, 336, 576, 900, 1320, 1980, 2808, 4004, 5670, 7680, 10336, 14076, 18468, 24320, 31920, 41118, 52624, 67344, 85200, 107250, 134784, 167832, 207872, 257520, 316200, 386880, 473088, 574464, 696150, 841680, 1012320, 1214784, 1455324]

cp's OEIS Frontend

A278407 G.f.: x^2 * f''(x), where f(x) = Product_{k>=1} (1 + x^k).

Table of values

List of values