A386938 - cp's OEIS frontend

A386938 a(n) = Sum_{k=0..n} binomial(4n+1,k) binomial(2*n-k-1,n-k).

n	a(n)
0	1
1	6
2	57
3	608
4	6835
5	79170
6	934892
7	11189568
8	135263799
9	1647649850
10	20191754297
11	248664799344
12	3074813151956
13	38151145101048
14	474747568376520
15	5922579575399680
16	74047774139941503
17	927579860291591226
18	11639480787978105179
19	146278009406326705600
20	1840856649159814801515

[1, 6, 57, 608, 6835, 79170, 934892, 11189568, 135263799, 1647649850, 20191754297, 248664799344, 3074813151956, 38151145101048, 474747568376520, 5922579575399680, 74047774139941503, 927579860291591226, 11639480787978105179, 146278009406326705600, 1840856649159814801515]

cp's OEIS Frontend

A386938 a(n) = Sum_{k=0..n} binomial(4n+1,k) binomial(2*n-k-1,n-k).

Table of values

List of values

cp's OEIS Frontend

A386938 a(n) = Sum_{k=0..n} binomial(4*n+1,k) * binomial(2*n-k-1,n-k).

Table of values

List of values

A386938 a(n) = Sum_{k=0..n} binomial(4n+1,k) binomial(2*n-k-1,n-k).