A370098 - cp's OEIS frontend

A370098 a(n) = Sum_{k=0..n} binomial(3n,k) binomial(4*n-k-1,n-k).

n	a(n)
0	1
1	6
2	72
3	978
4	14016
5	207006
6	3116952
7	47568618
8	733189632
9	11387193846
10	177923724072
11	2793666465090
12	44042615547456
13	696708049377294
14	11053262513080440
15	175800225426741978
16	2802193910116429824
17	44752001810800994022
18	715924864099841086728

[1, 6, 72, 978, 14016, 207006, 3116952, 47568618, 733189632, 11387193846, 177923724072, 2793666465090, 44042615547456, 696708049377294, 11053262513080440, 175800225426741978, 2802193910116429824, 44752001810800994022, 715924864099841086728]

cp's OEIS Frontend

A370098 a(n) = Sum_{k=0..n} binomial(3n,k) binomial(4*n-k-1,n-k).

Table of values

List of values

cp's OEIS Frontend

A370098 a(n) = Sum_{k=0..n} binomial(3*n,k) * binomial(4*n-k-1,n-k).

Table of values

List of values

A370098 a(n) = Sum_{k=0..n} binomial(3n,k) binomial(4*n-k-1,n-k).