A068041 - cp's OEIS frontend

A068041 Number of subsets of {1,2,3,...,n} that sum to 0 mod 20.

n	a(n)
0	1
1	1
2	1
3	1
4	1
5	1
6	2
7	6
8	14
9	26
10	52
11	103
12	205
13	410
14	820
15	1640
16	3278
17	6554
18	13108
19	26216
20	52432
21	104860
22	209716
23	419432
24	838864
25	1677728
26	3355448
27	6710888
28	13421776
29	26843552
30	53687104
31	107374192
32	214748368
33	429496736
34	858993472
35	1717986944

[1, 1, 1, 1, 1, 1, 2, 6, 14, 26, 52, 103, 205, 410, 820, 1640, 3278, 6554, 13108, 26216, 52432, 104860, 209716, 419432, 838864, 1677728, 3355448, 6710888, 13421776, 26843552, 53687104, 107374192, 214748368, 429496736, 858993472, 1717986944]

cp's OEIS Frontend

A068041 Number of subsets of {1,2,3,...,n} that sum to 0 mod 20.

Table of values

List of values