A145612 - cp's OEIS frontend

A145612 Denominator of the polynomial A_l(x) = Sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=2.

n	a(n)
1	1
2	6
3	15
4	420
5	63
6	1386
7	9009
8	360360
9	1531530
10	29099070
11	14549535
12	1338557220
13	1673196525
14	10039179150
15	145568097675
16	72201776446800
17	18050444111700
18	9025222055850
19	166966608033225
20	667866432132900
21	6845630929362225

[1, 6, 15, 420, 63, 1386, 9009, 360360, 1531530, 29099070, 14549535, 1338557220, 1673196525, 10039179150, 145568097675, 72201776446800, 18050444111700, 9025222055850, 166966608033225, 667866432132900, 6845630929362225]

cp's OEIS Frontend

A145612 Denominator of the polynomial A_l(x) = Sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=2.

Table of values

List of values