A144635 - cp's OEIS frontend

A144635 a(n) = 5^nSum_{ k=0..n } binomial(2k,k)/5^k.

n	a(n)
0	1
1	7
2	41
3	225
4	1195
5	6227
6	32059
7	163727
8	831505
9	4206145
10	21215481
11	106782837
12	536618341
13	2693492305
14	13507578125
15	67693008145
16	339066121115
17	1697664211795
18	8497396194275
19	42522326235175
20	212749477704695
21	1064285646397915
22	5323532330953295
23	26625895085494075

[1, 7, 41, 225, 1195, 6227, 32059, 163727, 831505, 4206145, 21215481, 106782837, 536618341, 2693492305, 13507578125, 67693008145, 339066121115, 1697664211795, 8497396194275, 42522326235175, 212749477704695, 1064285646397915, 5323532330953295, 26625895085494075]

cp's OEIS Frontend

A144635 a(n) = 5^nSum_{ k=0..n } binomial(2k,k)/5^k.

Table of values

List of values

cp's OEIS Frontend

A144635 a(n) = 5^n*Sum_{ k=0..n } binomial(2*k,k)/5^k.

Table of values

List of values

A144635 a(n) = 5^nSum_{ k=0..n } binomial(2k,k)/5^k.