A111876 - cp's OEIS frontend

A111876 Denominator of Sum_{k = 0..n} 1/((k+1)(2k+1)).

n	a(n)
0	1
1	6
2	30
3	420
4	1260
5	13860
6	180180
7	72072
8	1225224
9	116396280
10	116396280
11	2677114440
12	13385572200
13	5736673800
14	166363540200
15	10314539492400
16	10314539492400
17	72201776446800
18	2671465728531600
19	2671465728531600

[1, 6, 30, 420, 1260, 13860, 180180, 72072, 1225224, 116396280, 116396280, 2677114440, 13385572200, 5736673800, 166363540200, 10314539492400, 10314539492400, 72201776446800, 2671465728531600, 2671465728531600]

cp's OEIS Frontend

A111876 Denominator of Sum_{k = 0..n} 1/((k+1)(2k+1)).

Table of values

List of values

cp's OEIS Frontend

A111876 Denominator of Sum_{k = 0..n} 1/((k+1)*(2*k+1)).

Table of values

List of values

A111876 Denominator of Sum_{k = 0..n} 1/((k+1)(2k+1)).