A145613 - cp's OEIS frontend

A145613 Numerator of the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=3.

n	a(n)
1	21
2	393
3	17731
4	2234571
5	20111503
6	1991042087
7	33278851497
8	119803867191
9	54989975121893
10	15672142912044093
11	987345003473390379
12	204380415719298965303
13	9197118707369867504211
14	248322205098990353297597

[21, 393, 17731, 2234571, 20111503, 1991042087, 33278851497, 119803867191, 54989975121893, 15672142912044093, 987345003473390379, 204380415719298965303, 9197118707369867504211, 248322205098990353297597]

cp's OEIS Frontend

A145613 Numerator of the polynomial A_l(x) = sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=3.

Table of values

List of values