A371776 - cp's OEIS frontend

A371776 a(n) = Sum_{k=0..floor(n/3)} binomial(5n-k+1,n-3k).

n	a(n)
0	1
1	6
2	55
3	561
4	6005
5	66080
6	740342
7	8400074
8	96206994
9	1109874635
10	12877808194
11	150122945518
12	1756887201266
13	20628519611407
14	242891806678851
15	2866906127955287
16	33910670558191711
17	401857349039547372
18	4770115555036932777
19	56706219260783415643

[1, 6, 55, 561, 6005, 66080, 740342, 8400074, 96206994, 1109874635, 12877808194, 150122945518, 1756887201266, 20628519611407, 242891806678851, 2866906127955287, 33910670558191711, 401857349039547372, 4770115555036932777, 56706219260783415643]

cp's OEIS Frontend

A371776 a(n) = Sum_{k=0..floor(n/3)} binomial(5n-k+1,n-3k).

Table of values

List of values

cp's OEIS Frontend

A371776 a(n) = Sum_{k=0..floor(n/3)} binomial(5*n-k+1,n-3*k).

Table of values

List of values

A371776 a(n) = Sum_{k=0..floor(n/3)} binomial(5n-k+1,n-3k).