A352275 - cp's OEIS frontend

A352275 a(0) = 1 and a(n) = Sum_{k = 0..2n} n/(n + 2k)binomial(n + 2k,k) for n >= 1.

n	a(n)
0	1
1	4
2	64
3	1429
4	35072
5	898129
6	23571781
7	628750217
8	16965558016
9	461752375705
10	12652302369439
11	348552604899778
12	9644571491252069
13	267852878928912034
14	7462156684641697991
15	208446714456132946429
16	5836259481820028112640
17	163741162073796817779389
18	4602160147618819467316159

[1, 4, 64, 1429, 35072, 898129, 23571781, 628750217, 16965558016, 461752375705, 12652302369439, 348552604899778, 9644571491252069, 267852878928912034, 7462156684641697991, 208446714456132946429, 5836259481820028112640, 163741162073796817779389, 4602160147618819467316159]

cp's OEIS Frontend

A352275 a(0) = 1 and a(n) = Sum_{k = 0..2n} n/(n + 2k)binomial(n + 2k,k) for n >= 1.

Table of values

List of values

cp's OEIS Frontend

A352275 a(0) = 1 and a(n) = Sum_{k = 0..2*n} n/(n + 2*k)*binomial(n + 2*k,k) for n >= 1.

Table of values

List of values

A352275 a(0) = 1 and a(n) = Sum_{k = 0..2n} n/(n + 2k)binomial(n + 2k,k) for n >= 1.