A375002 - cp's OEIS frontend

A375002 a(n) = Sum_{i+j+k+m=n, i,j,k,m >= 1} tau(i) * tau(j) * tau(k) * tau(m).

n	a(n)
1	0
2	0
3	0
4	1
5	8
6	32
7	92
8	216
9	440
10	814
11	1392
12	2244
13	3452
14	5096
15	7292
16	10129
17	13760
18	18284
19	23868
20	30662
21	38820
22	48556
23	59948
24	73424
25	88796
26	106886
27	127052
28	150732
29	176560
30	206920
31	239344
32	277616
33	317516
34	365034
35	413508
36	471637
37	529712
38	600076
39	668708
40	753070
41	833408

[0, 0, 0, 1, 8, 32, 92, 216, 440, 814, 1392, 2244, 3452, 5096, 7292, 10129, 13760, 18284, 23868, 30662, 38820, 48556, 59948, 73424, 88796, 106886, 127052, 150732, 176560, 206920, 239344, 277616, 317516, 365034, 413508, 471637, 529712, 600076, 668708, 753070, 833408]

cp's OEIS Frontend

A375002 a(n) = Sum_{i+j+k+m=n, i,j,k,m >= 1} tau(i) * tau(j) * tau(k) * tau(m).

Table of values

List of values