A181374 - cp's OEIS frontend

A181374 Let f(n) = Sum_{j>=1} j^n3^j/binomial(2j,j) = r_n*Pi/sqrt(3) + s_n; sequence gives s_n.

n	a(n)
0	3
1	18
2	156
3	1890
4	29496
5	563094
6	12709956
7	331109658
8	9777612432
9	322738005150
10	11775245575836
11	470571509329506
12	20441566147934568
13	959052902557542246
14	48330130399621041396
15	2603558645653906065834
16	149306059777139762896704
17	9081311859252750219451182
18	583927964165576868953730636

[3, 18, 156, 1890, 29496, 563094, 12709956, 331109658, 9777612432, 322738005150, 11775245575836, 470571509329506, 20441566147934568, 959052902557542246, 48330130399621041396, 2603558645653906065834, 149306059777139762896704, 9081311859252750219451182, 583927964165576868953730636]

cp's OEIS Frontend

A181374 Let f(n) = Sum_{j>=1} j^n3^j/binomial(2j,j) = r_n*Pi/sqrt(3) + s_n; sequence gives s_n.

Table of values

List of values

cp's OEIS Frontend

A181374 Let f(n) = Sum_{j>=1} j^n*3^j/binomial(2*j,j) = r_n*Pi/sqrt(3) + s_n; sequence gives s_n.

Table of values

List of values

A181374 Let f(n) = Sum_{j>=1} j^n3^j/binomial(2j,j) = r_n*Pi/sqrt(3) + s_n; sequence gives s_n.