A386937 - cp's OEIS frontend

A386937 a(n) = Sum_{k=0..n} binomial(3n+1,k) binomial(2*n-k-1,n-k).

n	a(n)
0	1
1	5
2	38
3	325
4	2934
5	27314
6	259356
7	2496813
8	24281510
9	237978598
10	2346750900
11	23257207714
12	231438363324
13	2311082461380
14	23146003391352
15	232402586792061
16	2338665721556742
17	23579860411878110
18	238157209512898500
19	2409099858256570710
20	24403155769842168660

[1, 5, 38, 325, 2934, 27314, 259356, 2496813, 24281510, 237978598, 2346750900, 23257207714, 231438363324, 2311082461380, 23146003391352, 232402586792061, 2338665721556742, 23579860411878110, 238157209512898500, 2409099858256570710, 24403155769842168660]

cp's OEIS Frontend

A386937 a(n) = Sum_{k=0..n} binomial(3n+1,k) binomial(2*n-k-1,n-k).

Table of values

List of values

cp's OEIS Frontend

A386937 a(n) = Sum_{k=0..n} binomial(3*n+1,k) * binomial(2*n-k-1,n-k).

Table of values

List of values

A386937 a(n) = Sum_{k=0..n} binomial(3n+1,k) binomial(2*n-k-1,n-k).