A356289 - cp's OEIS frontend

A356289 a(n) = Sum_{k=0..n} binomial(2n, n-k) v(k), where v(k) is the number of overpartitions of n (A015128).

n	a(n)
0	1
1	4
2	18
3	82
4	372
5	1676
6	7500
7	33358
8	147570
9	649722
10	2848524
11	12441434
12	54155774
13	235008672
14	1016971480
15	4389589484
16	18902538548
17	81222609020
18	348308661820
19	1490884718484
20	6370468593732
21	27176620756392
22	115760526170340
23	492386739902574
24	2091554077819948
25	8873225318953248

[1, 4, 18, 82, 372, 1676, 7500, 33358, 147570, 649722, 2848524, 12441434, 54155774, 235008672, 1016971480, 4389589484, 18902538548, 81222609020, 348308661820, 1490884718484, 6370468593732, 27176620756392, 115760526170340, 492386739902574, 2091554077819948, 8873225318953248]

cp's OEIS Frontend

A356289 a(n) = Sum_{k=0..n} binomial(2n, n-k) v(k), where v(k) is the number of overpartitions of n (A015128).

Table of values

List of values

cp's OEIS Frontend

A356289 a(n) = Sum_{k=0..n} binomial(2*n, n-k) * v(k), where v(k) is the number of overpartitions of n (A015128).

Table of values

List of values

A356289 a(n) = Sum_{k=0..n} binomial(2n, n-k) v(k), where v(k) is the number of overpartitions of n (A015128).