A379025 - cp's OEIS frontend

A379025 a(n) = Sum_{k=0..n} binomial(3n+k-1,k) binomial(3*n+k,n-k).

n	a(n)
0	1
1	6
2	78
3	1149
4	17850
5	285711
6	4661727
7	77086008
8	1287322866
9	21661521945
10	366687839133
11	6237631866417
12	106535632157643
13	1825763898882189
14	31379978657609100
15	540688387589377764
16	9336602657251874754
17	161534120354250452361
18	2799488717098336992687

[1, 6, 78, 1149, 17850, 285711, 4661727, 77086008, 1287322866, 21661521945, 366687839133, 6237631866417, 106535632157643, 1825763898882189, 31379978657609100, 540688387589377764, 9336602657251874754, 161534120354250452361, 2799488717098336992687]

cp's OEIS Frontend

A379025 a(n) = Sum_{k=0..n} binomial(3n+k-1,k) binomial(3*n+k,n-k).

Table of values

List of values

cp's OEIS Frontend

A379025 a(n) = Sum_{k=0..n} binomial(3*n+k-1,k) * binomial(3*n+k,n-k).

Table of values

List of values

A379025 a(n) = Sum_{k=0..n} binomial(3n+k-1,k) binomial(3*n+k,n-k).