A370556 - cp's OEIS frontend

A370556 a(n) is the denominator 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	1
2	2
3	9
4	144
5	72
6	2592
7	63504
8	4064256
9	164602368
10	658409472
11	39833773056
12	5736063320064
13	2868031660032
14	562134205366272
15	2529603924148224
16	647578604581945344
17	323789302290972672
18	104907733942275145728
19	18935845976580663803904
20	302973535625290620862464
21	66805664605376581900173312

[1, 2, 9, 144, 72, 2592, 63504, 4064256, 164602368, 658409472, 39833773056, 5736063320064, 2868031660032, 562134205366272, 2529603924148224, 647578604581945344, 323789302290972672, 104907733942275145728, 18935845976580663803904, 302973535625290620862464, 66805664605376581900173312]

cp's OEIS Frontend

A370556 a(n) is the denominator 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