A386844 - cp's OEIS frontend

A386844 a(n) = Sum_{k=0..n} binomial(3n+2,k) binomial(3*n-k,n-k).

n	a(n)
0	1
1	8
2	83
3	942
4	11177
5	136164
6	1688031
7	21187546
8	268409813
9	3424751568
10	43948343243
11	566607282118
12	7333422759873
13	95225755205564
14	1239995365588919
15	16186010348814258
16	211729232160358317
17	2774813844884684712
18	36425708310248816547
19	478880147399497482142
20	6304133921156502650777

[1, 8, 83, 942, 11177, 136164, 1688031, 21187546, 268409813, 3424751568, 43948343243, 566607282118, 7333422759873, 95225755205564, 1239995365588919, 16186010348814258, 211729232160358317, 2774813844884684712, 36425708310248816547, 478880147399497482142, 6304133921156502650777]

cp's OEIS Frontend

A386844 a(n) = Sum_{k=0..n} binomial(3n+2,k) binomial(3*n-k,n-k).

Table of values

List of values

cp's OEIS Frontend

A386844 a(n) = Sum_{k=0..n} binomial(3*n+2,k) * binomial(3*n-k,n-k).

Table of values

List of values

A386844 a(n) = Sum_{k=0..n} binomial(3n+2,k) binomial(3*n-k,n-k).