A337388 - cp's OEIS frontend

A337388 a(n) = Sum_{k=0..n} n^(n-k) * binomial(2k,k) binomial(2n,2k).

n	a(n)
0	1
1	3
2	34
3	587
4	12870
5	337877
6	10262004
7	352436961
8	13465074758
9	565280386625
10	25826066397756
11	1274138666796217
12	67446164001827356
13	3810171540686207283
14	228658931521878071080
15	14520123059677034441895
16	972281769469377542763078
17	68443768336740463562683177

[1, 3, 34, 587, 12870, 337877, 10262004, 352436961, 13465074758, 565280386625, 25826066397756, 1274138666796217, 67446164001827356, 3810171540686207283, 228658931521878071080, 14520123059677034441895, 972281769469377542763078, 68443768336740463562683177]

cp's OEIS Frontend

A337388 a(n) = Sum_{k=0..n} n^(n-k) * binomial(2k,k) binomial(2n,2k).

Table of values

List of values

cp's OEIS Frontend

A337388 a(n) = Sum_{k=0..n} n^(n-k) * binomial(2*k,k) * binomial(2*n,2*k).

Table of values

List of values

A337388 a(n) = Sum_{k=0..n} n^(n-k) * binomial(2k,k) binomial(2n,2k).