A374931 - cp's OEIS frontend

A374931 Expansion of Sum_{1<=i<=j<=k<=l} q^(i+j+k+l)/( (1-q^i)(1-q^j)(1-q^k)*(1-q^l) )^2.

n	a(n)
4	1
5	9
6	44
7	156
8	450
9	1121
10	2508
11	5139
12	9867
13	17831
14	30888
15	51117
16	82212
17	127458
18	193809
19	285702
20	415701
21	588797
22	826803
23	1133352
24	1545986
25	2062203
26	2744811
27	3579155
28	4665375
29	5964543
30	7638983
31	9600392
32	12104136
33	14992496
34	18642996
35	22787829
36	28006341
37	33830697
38	41125050
39	49183310
40	59202486

[1, 9, 44, 156, 450, 1121, 2508, 5139, 9867, 17831, 30888, 51117, 82212, 127458, 193809, 285702, 415701, 588797, 826803, 1133352, 1545986, 2062203, 2744811, 3579155, 4665375, 5964543, 7638983, 9600392, 12104136, 14992496, 18642996, 22787829, 28006341, 33830697, 41125050, 49183310, 59202486]

cp's OEIS Frontend

A374931 Expansion of Sum_{1<=i<=j<=k<=l} q^(i+j+k+l)/( (1-q^i)(1-q^j)(1-q^k)*(1-q^l) )^2.

Table of values

List of values

cp's OEIS Frontend

A374931 Expansion of Sum_{1<=i<=j<=k<=l} q^(i+j+k+l)/( (1-q^i)*(1-q^j)*(1-q^k)*(1-q^l) )^2.

Table of values

List of values

A374931 Expansion of Sum_{1<=i<=j<=k<=l} q^(i+j+k+l)/( (1-q^i)(1-q^j)(1-q^k)*(1-q^l) )^2.