A068030 - cp's OEIS frontend

A068030 Number of subsets of {1,2,3,...,n} that sum to 0 mod 9.

n	a(n)
0	1
1	1
2	1
3	1
4	2
5	4
6	8
7	15
8	30
9	60
10	116
11	230
12	458
13	912
14	1824
15	3648
16	7286
17	14572
18	29144
19	58264
20	116524
21	233044
22	466048
23	932096
24	1864192
25	3728300
26	7456600
27	14913200
28	29826224
29	59652440
30	119304872
31	238609408
32	477218816
33	954437632
34	1908874584

[1, 1, 1, 1, 2, 4, 8, 15, 30, 60, 116, 230, 458, 912, 1824, 3648, 7286, 14572, 29144, 58264, 116524, 233044, 466048, 932096, 1864192, 3728300, 7456600, 14913200, 29826224, 59652440, 119304872, 238609408, 477218816, 954437632, 1908874584]

cp's OEIS Frontend

A068030 Number of subsets of {1,2,3,...,n} that sum to 0 mod 9.

Table of values

List of values