A145610 - cp's OEIS frontend

A145610 Denominator of the polynomial A_l(x) = Sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=1.

n	a(n)
1	2
2	12
3	20
4	280
5	2520
6	27720
7	360360
8	720720
9	4084080
10	15519504
11	5173168
12	356948592
13	8923714800
14	80313433200
15	2329089562800
16	144403552893600
17	13127595717600
18	13127595717600
19	485721041551200
20	485721041551200

[2, 12, 20, 280, 2520, 27720, 360360, 720720, 4084080, 15519504, 5173168, 356948592, 8923714800, 80313433200, 2329089562800, 144403552893600, 13127595717600, 13127595717600, 485721041551200, 485721041551200]

cp's OEIS Frontend

A145610 Denominator of the polynomial A_l(x) = Sum_{d=1..l-1} x^(l-d)/d for index l=2n+1 evaluated at x=1.

Table of values

List of values