A056188 - cp's OEIS frontend

A056188 a(1) = 1; for n>1, sum of binomial(n,k) as k runs over RRS(n), the reduced residue system of n.

n	a(n)
1	1
2	2
3	6
4	8
5	30
6	12
7	126
8	128
9	342
10	260
11	2046
12	1608
13	8190
14	4760
15	15840
16	32768
17	131070
18	80820
19	524286
20	493280
21	1165542
22	1391720
23	8388606
24	5769552
25	26910650
26	23153832
27	89478486
28	131849648
29	536870910
30	352845960
31	2147483646
32	2147483648

[1, 2, 6, 8, 30, 12, 126, 128, 342, 260, 2046, 1608, 8190, 4760, 15840, 32768, 131070, 80820, 524286, 493280, 1165542, 1391720, 8388606, 5769552, 26910650, 23153832, 89478486, 131849648, 536870910, 352845960, 2147483646, 2147483648]

cp's OEIS Frontend

A056188 a(1) = 1; for n>1, sum of binomial(n,k) as k runs over RRS(n), the reduced residue system of n.

Table of values

List of values