A346666 - cp's OEIS frontend

A346666 a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n,k) * binomial(6k,k) / (5k + 1).

n	a(n)
0	1
1	0
2	5
3	35
4	335
5	3405
6	36601
7	408630
8	4693535
9	55105970
10	658390845
11	7979041735
12	97847884981
13	1211946011450
14	15139726594915
15	190526268260405
16	2413170608875655
17	30738613968350640
18	393519782671609951
19	5060600804169151680
20	65342131689498876095
21	846781225288921612940

[1, 0, 5, 35, 335, 3405, 36601, 408630, 4693535, 55105970, 658390845, 7979041735, 97847884981, 1211946011450, 15139726594915, 190526268260405, 2413170608875655, 30738613968350640, 393519782671609951, 5060600804169151680, 65342131689498876095, 846781225288921612940]

cp's OEIS Frontend

A346666 a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n,k) * binomial(6k,k) / (5k + 1).

Table of values

List of values

cp's OEIS Frontend

A346666 a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n,k) * binomial(6*k,k) / (5*k + 1).

Table of values

List of values

A346666 a(n) = Sum_{k=0..n} (-1)^(n-k) * binomial(n,k) * binomial(6k,k) / (5k + 1).