A370101 - cp's OEIS frontend

A370101 a(n) = Sum_{k=0..n} binomial(4n,k) binomial(4*n-k-1,n-k).

n	a(n)
0	1
1	7
2	97
3	1519
4	25089
5	427007
6	7408897
7	130287871
8	2313945089
9	41409732607
10	745530884097
11	13488086405119
12	245014271688705
13	4465915098890239
14	81637668328243201
15	1496095489290731519
16	27477504726883368961
17	505627095685486608383
18	9320167322334416338945

[1, 7, 97, 1519, 25089, 427007, 7408897, 130287871, 2313945089, 41409732607, 745530884097, 13488086405119, 245014271688705, 4465915098890239, 81637668328243201, 1496095489290731519, 27477504726883368961, 505627095685486608383, 9320167322334416338945]

cp's OEIS Frontend

A370101 a(n) = Sum_{k=0..n} binomial(4n,k) binomial(4*n-k-1,n-k).

Table of values

List of values

cp's OEIS Frontend

A370101 a(n) = Sum_{k=0..n} binomial(4*n,k) * binomial(4*n-k-1,n-k).

Table of values

List of values

A370101 a(n) = Sum_{k=0..n} binomial(4n,k) binomial(4*n-k-1,n-k).