A384495 - cp's OEIS frontend

A384495 a(n) = Sum_{k=0..n} binomial(n,k)^2 * abs(Stirling1(2k,k)) abs(Stirling1(2n-2k,n-k)).

n	a(n)
0	1
1	2
2	26
3	648
4	25094
5	1372100
6	99827020
7	9233563136
8	1045169591270
9	140259346792380
10	21754963505429340
11	3823376222328582480
12	749784319125445476092
13	162122841942093462239368
14	38288723630416561023861048
15	9801732906198391239249940800
16	2702731846233390353066363949830

[1, 2, 26, 648, 25094, 1372100, 99827020, 9233563136, 1045169591270, 140259346792380, 21754963505429340, 3823376222328582480, 749784319125445476092, 162122841942093462239368, 38288723630416561023861048, 9801732906198391239249940800, 2702731846233390353066363949830]

cp's OEIS Frontend

A384495 a(n) = Sum_{k=0..n} binomial(n,k)^2 * abs(Stirling1(2k,k)) abs(Stirling1(2n-2k,n-k)).

Table of values

List of values

cp's OEIS Frontend

A384495 a(n) = Sum_{k=0..n} binomial(n,k)^2 * abs(Stirling1(2*k,k)) * abs(Stirling1(2*n-2*k,n-k)).

Table of values

List of values

A384495 a(n) = Sum_{k=0..n} binomial(n,k)^2 * abs(Stirling1(2k,k)) abs(Stirling1(2n-2k,n-k)).