A386939 - cp's OEIS frontend

A386939 a(n) = Sum_{k=0..n} binomial(4n+1,k) binomial(3*n-k-1,n-k).

n	a(n)
0	1
1	7
2	82
3	1083
4	15086
5	216566
6	3169636
7	47020371
8	704497750
9	10636206306
10	161553957500
11	2465911305182
12	37791965926092
13	581171323026508
14	8963417696439752
15	138590900605115779
16	2147571141595692390
17	33342454213792397930
18	518548824827926272268
19	8076888443386745743530

[1, 7, 82, 1083, 15086, 216566, 3169636, 47020371, 704497750, 10636206306, 161553957500, 2465911305182, 37791965926092, 581171323026508, 8963417696439752, 138590900605115779, 2147571141595692390, 33342454213792397930, 518548824827926272268, 8076888443386745743530]

cp's OEIS Frontend

A386939 a(n) = Sum_{k=0..n} binomial(4n+1,k) binomial(3*n-k-1,n-k).

Table of values

List of values

cp's OEIS Frontend

A386939 a(n) = Sum_{k=0..n} binomial(4*n+1,k) * binomial(3*n-k-1,n-k).

Table of values

List of values

A386939 a(n) = Sum_{k=0..n} binomial(4n+1,k) binomial(3*n-k-1,n-k).