A318593 - cp's OEIS frontend

A318593 Number of n-member subsets of [5*n] whose elements sum to a multiple of five.

n	a(n)
0	1
1	1
2	9
3	91
4	969
5	10630
6	118755
7	1344904
8	15380937
9	177232627
10	2054455670
11	23930713170
12	279871768995
13	3284214703056
14	38650751381832
15	456002537343580
16	5391644226101705
17	63871405575418665
18	757929628541719755
19	9007607943130625829
20	107196674080761940470

[1, 1, 9, 91, 969, 10630, 118755, 1344904, 15380937, 177232627, 2054455670, 23930713170, 279871768995, 3284214703056, 38650751381832, 456002537343580, 5391644226101705, 63871405575418665, 757929628541719755, 9007607943130625829, 107196674080761940470]

cp's OEIS Frontend

A318593 Number of n-member subsets of [5*n] whose elements sum to a multiple of five.

Table of values

List of values