A333653 - cp's OEIS frontend

A333653 Expansion of Product_{i>=1, j>=1} (1 + ix^(ij)).

n	a(n)
0	1
1	1
2	3
3	7
4	13
5	27
6	54
7	98
8	174
9	335
10	572
11	1004
12	1733
13	2933
14	4916
15	8307
16	13470
17	22042
18	35851
19	57256
20	91462
21	145231
22	227667
23	355522
24	554058
25	853986
26	1313121
27	2010318
28	3057827
29	4627213
30	6989808
31	10481205
32	15679549
33	23365207
34	34658909
35	51241077
36	75541695
37	110852295
38	162238415

[1, 1, 3, 7, 13, 27, 54, 98, 174, 335, 572, 1004, 1733, 2933, 4916, 8307, 13470, 22042, 35851, 57256, 91462, 145231, 227667, 355522, 554058, 853986, 1313121, 2010318, 3057827, 4627213, 6989808, 10481205, 15679549, 23365207, 34658909, 51241077, 75541695, 110852295, 162238415]

cp's OEIS Frontend

A333653 Expansion of Product_{i>=1, j>=1} (1 + ix^(ij)).

Table of values

List of values

cp's OEIS Frontend

A333653 Expansion of Product_{i>=1, j>=1} (1 + i*x^(i*j)).

Table of values

List of values

A333653 Expansion of Product_{i>=1, j>=1} (1 + ix^(ij)).