A334237 - cp's OEIS frontend

A334237 a(n) = 2Sum_{k=0..n-1} binomial(n,k)^2binomial(n,k+1)^2.

n	a(n)
1	2
2	16
3	198
4	2368
5	30100
6	392544
7	5248782
8	71501056
9	989177508
10	13859716000
11	196282985756
12	2805235913088
13	40408113882344
14	586055349387200
15	8551024115349150
16	125431745952519168
17	1848653992986172324
18	27362153523832614432
19	406546456064695351020

[2, 16, 198, 2368, 30100, 392544, 5248782, 71501056, 989177508, 13859716000, 196282985756, 2805235913088, 40408113882344, 586055349387200, 8551024115349150, 125431745952519168, 1848653992986172324, 27362153523832614432, 406546456064695351020]

cp's OEIS Frontend

A334237 a(n) = 2Sum_{k=0..n-1} binomial(n,k)^2binomial(n,k+1)^2.

Table of values

List of values

cp's OEIS Frontend

A334237 a(n) = 2*Sum_{k=0..n-1} binomial(n,k)^2*binomial(n,k+1)^2.

Table of values

List of values

A334237 a(n) = 2Sum_{k=0..n-1} binomial(n,k)^2binomial(n,k+1)^2.