A339710 - cp's OEIS frontend

A339710 a(n) = Sum_{k=0..n} binomial(n, k)binomial(2n + k, k)*2^k.

n	a(n)
0	1
1	7
2	81
3	1051
4	14353
5	201807
6	2891409
7	41976627
8	615371169
9	9089130967
10	135048608401
11	2016306678987
12	30224723308081
13	454603719479839
14	6857319231939537
15	103694587800440931
16	1571449259865571137
17	23860205774602899111
18	362897293035114695121
19	5527773456878667951483

[1, 7, 81, 1051, 14353, 201807, 2891409, 41976627, 615371169, 9089130967, 135048608401, 2016306678987, 30224723308081, 454603719479839, 6857319231939537, 103694587800440931, 1571449259865571137, 23860205774602899111, 362897293035114695121, 5527773456878667951483]

cp's OEIS Frontend

A339710 a(n) = Sum_{k=0..n} binomial(n, k)binomial(2n + k, k)*2^k.

Table of values

List of values

cp's OEIS Frontend

A339710 a(n) = Sum_{k=0..n} binomial(n, k)*binomial(2*n + k, k)*2^k.

Table of values

List of values

A339710 a(n) = Sum_{k=0..n} binomial(n, k)binomial(2n + k, k)*2^k.