A212297 - cp's OEIS frontend

A212297 a(n) = denominator(1 + Sum_{k=1..n} n^2 / Product_{j=1..k} 4*j^2).

n	a(n)
1	4
2	16
3	256
4	9216
5	196608
6	11796480
7	8493465600
8	554906419200
9	426168129945600
10	138078474102374400
11	1227364214243328000
12	26731992586219683840000
13	15397627729662537891840000
14	3469598781750625204961280000
15	8160496334677470482068930560000

[4, 16, 256, 9216, 196608, 11796480, 8493465600, 554906419200, 426168129945600, 138078474102374400, 1227364214243328000, 26731992586219683840000, 15397627729662537891840000, 3469598781750625204961280000, 8160496334677470482068930560000]

cp's OEIS Frontend

A212297 a(n) = denominator(1 + Sum_{k=1..n} n^2 / Product_{j=1..k} 4*j^2).

Table of values

List of values