A110626 - cp's OEIS frontend

A110626 Denominator of b(n) = -Sum_{k=1..n} A037861(k)/((2k)(2*k+1)), where A037861(k) = (number of 0's) - (number of 1's) in the binary representation of k.

n	a(n)
1	6
2	6
3	14
4	504
5	27720
6	360360
7	360360
8	765765
9	765765
10	765765
11	1601145
12	1601145
13	369495
14	3061530
15	94907430
16	16703707680
17	116925953760
18	4326260289120
19	1068586291412640
20	43812037947918240
21	1883917631760484320

[6, 6, 14, 504, 27720, 360360, 360360, 765765, 765765, 765765, 1601145, 1601145, 369495, 3061530, 94907430, 16703707680, 116925953760, 4326260289120, 1068586291412640, 43812037947918240, 1883917631760484320]

cp's OEIS Frontend

A110626 Denominator of b(n) = -Sum_{k=1..n} A037861(k)/((2k)(2*k+1)), where A037861(k) = (number of 0's) - (number of 1's) in the binary representation of k.

Table of values

List of values

cp's OEIS Frontend

A110626 Denominator of b(n) = -Sum_{k=1..n} A037861(k)/((2*k)*(2*k+1)), where A037861(k) = (number of 0's) - (number of 1's) in the binary representation of k.

Table of values

List of values

A110626 Denominator of b(n) = -Sum_{k=1..n} A037861(k)/((2k)(2*k+1)), where A037861(k) = (number of 0's) - (number of 1's) in the binary representation of k.