A373221 - cp's OEIS frontend

A373221 Expansion of Product_{i>=1, j>=0} (1 + x^(i * 7^j)).

n	a(n)
0	1
1	1
2	1
3	2
4	2
5	3
6	4
7	6
8	7
9	9
10	12
11	14
12	18
13	22
14	28
15	34
16	41
17	50
18	60
19	72
20	86
21	105
22	124
23	146
24	174
25	204
26	240
27	282
28	332
29	386
30	450
31	524
32	606
33	703
34	812
35	940
36	1082
37	1243
38	1428
39	1636
40	1873
41	2140
42	2448
43	2788
44	3172
45	3610
46	4096
47	4646
48	5264
49	5963
50	6737
51	7607
52	8584
53	9668
54	10887
55	12244
56	13765
57	15451
58	17328

[1, 1, 1, 2, 2, 3, 4, 6, 7, 9, 12, 14, 18, 22, 28, 34, 41, 50, 60, 72, 86, 105, 124, 146, 174, 204, 240, 282, 332, 386, 450, 524, 606, 703, 812, 940, 1082, 1243, 1428, 1636, 1873, 2140, 2448, 2788, 3172, 3610, 4096, 4646, 5264, 5963, 6737, 7607, 8584, 9668, 10887, 12244, 13765, 15451, 17328]

cp's OEIS Frontend

A373221 Expansion of Product_{i>=1, j>=0} (1 + x^(i * 7^j)).

Table of values

List of values