A386845 - cp's OEIS frontend

A386845 a(n) = Sum_{k=0..n} binomial(4n+2,k) binomial(4*n-k,n-k).

n	a(n)
0	1
1	10
2	143
3	2264
4	37601
5	642086
6	11165395
7	196658228
8	3496849349
9	62636490818
10	1128525823927
11	20429545554000
12	371294468833193
13	6770529284259934
14	123811606398566299
15	2269695135303598188
16	41697091253148057485
17	767476182916622450810
18	14149874243880085356415

[1, 10, 143, 2264, 37601, 642086, 11165395, 196658228, 3496849349, 62636490818, 1128525823927, 20429545554000, 371294468833193, 6770529284259934, 123811606398566299, 2269695135303598188, 41697091253148057485, 767476182916622450810, 14149874243880085356415]

cp's OEIS Frontend

A386845 a(n) = Sum_{k=0..n} binomial(4n+2,k) binomial(4*n-k,n-k).

Table of values

List of values

cp's OEIS Frontend

A386845 a(n) = Sum_{k=0..n} binomial(4*n+2,k) * binomial(4*n-k,n-k).

Table of values

List of values

A386845 a(n) = Sum_{k=0..n} binomial(4n+2,k) binomial(4*n-k,n-k).