A370555 - cp's OEIS frontend

A370555 a(n) is the numerator of f(n)*conj(f(n)), where f(n) = Product_{k=1..n} (1/k + i), i is the imaginary unit, and conj(z) is the complex conjugate of z.

n	a(n)
1	2
2	5
3	25
4	425
5	221
6	8177
7	204425
8	13287625
9	544792625
10	2200962205
11	134258694505
12	19467510703225
13	9791351537125
14	1928896252813625
15	8718611062717585
16	2240683043118419345
17	1124218135820660225
18	365370894141714573125
19	66132131839650337735625
20	1060759394707991417279425

[2, 5, 25, 425, 221, 8177, 204425, 13287625, 544792625, 2200962205, 134258694505, 19467510703225, 9791351537125, 1928896252813625, 8718611062717585, 2240683043118419345, 1124218135820660225, 365370894141714573125, 66132131839650337735625, 1060759394707991417279425]

cp's OEIS Frontend

A370555 a(n) is the numerator of f(n)*conj(f(n)), where f(n) = Product_{k=1..n} (1/k + i), i is the imaginary unit, and conj(z) is the complex conjugate of z.

Table of values

List of values