A377401 - cp's OEIS frontend

A377401 a(n) = denominator((1/n!)Sum_{k=1..n} 1/(2k)).

n	a(n)
0	1
1	2
2	8
3	72
4	576
5	14400
6	28800
7	470400
8	22579200
9	1828915200
10	18289152000
11	2212987392000
12	26555848704000
13	4487938430976000
14	62831138033664000
15	942467070504960000
16	30158946256158720000
17	8715935468029870080000
18	52295612808179220480000
19	18878716223752698593280000

[1, 2, 8, 72, 576, 14400, 28800, 470400, 22579200, 1828915200, 18289152000, 2212987392000, 26555848704000, 4487938430976000, 62831138033664000, 942467070504960000, 30158946256158720000, 8715935468029870080000, 52295612808179220480000, 18878716223752698593280000]

cp's OEIS Frontend

A377401 a(n) = denominator((1/n!)Sum_{k=1..n} 1/(2k)).

Table of values

List of values

cp's OEIS Frontend

A377401 a(n) = denominator((1/n!)*Sum_{k=1..n} 1/(2*k)).

Table of values

List of values

A377401 a(n) = denominator((1/n!)Sum_{k=1..n} 1/(2k)).