A225846 - cp's OEIS frontend

A225846 Denominator of c(n) = 2^(2n)(2^(2n) - 1)/(2n)!, a coefficient used in the expansion of tan(x) as Sum_{n>=1} c(n)|Bernoulli(2n)|x^(2n-1).

n	a(n)
0	1
1	1
2	1
3	5
4	21
5	4725
6	1485
7	14189175
8	42567525
9	516891375
10	11249435925
11	714620417135625
12	2124921731625
13	16025362854266390625
14	605758715891269565625
15	5703572324950265390625
16	480509193164339417203125
17	22913080876041525109331015625
18	92765509619601316232109375

[1, 1, 1, 5, 21, 4725, 1485, 14189175, 42567525, 516891375, 11249435925, 714620417135625, 2124921731625, 16025362854266390625, 605758715891269565625, 5703572324950265390625, 480509193164339417203125, 22913080876041525109331015625, 92765509619601316232109375]

cp's OEIS Frontend

A225846 Denominator of c(n) = 2^(2n)(2^(2n) - 1)/(2n)!, a coefficient used in the expansion of tan(x) as Sum_{n>=1} c(n)|Bernoulli(2n)|x^(2n-1).

Table of values

List of values

cp's OEIS Frontend

A225846 Denominator of c(n) = 2^(2*n)*(2^(2*n) - 1)/(2*n)!, a coefficient used in the expansion of tan(x) as Sum_{n>=1} c(n)*|Bernoulli(2*n)|*x^(2*n-1).

Table of values

List of values

A225846 Denominator of c(n) = 2^(2n)(2^(2n) - 1)/(2n)!, a coefficient used in the expansion of tan(x) as Sum_{n>=1} c(n)|Bernoulli(2n)|x^(2n-1).