A113549 - cp's OEIS frontend

A113549 a(n) = product of n successive numbers up to n, if n is even a(n) = n(n-1).. = n!, if n is odd a(n) = n(n+1)(n+2)... 'n' terms.

n	a(n)
1	1
2	2
3	60
4	24
5	15120
6	720
7	8648640
8	40320
9	8821612800
10	3628800
11	14079294028800
12	479001600
13	32382376266240000
14	87178291200
15	101421602465863680000
16	20922789888000
17	415017197290314178560000
18	6402373705728000
19	2149789081963827444940800000

[1, 2, 60, 24, 15120, 720, 8648640, 40320, 8821612800, 3628800, 14079294028800, 479001600, 32382376266240000, 87178291200, 101421602465863680000, 20922789888000, 415017197290314178560000, 6402373705728000, 2149789081963827444940800000]

cp's OEIS Frontend

A113549 a(n) = product of n successive numbers up to n, if n is even a(n) = n(n-1).. = n!, if n is odd a(n) = n(n+1)(n+2)... 'n' terms.

Table of values

List of values

cp's OEIS Frontend

A113549 a(n) = product of n successive numbers up to n, if n is even a(n) = n*(n-1)*.. = n!, if n is odd a(n) = n(n+1)(n+2)... 'n' terms.

Table of values

List of values

A113549 a(n) = product of n successive numbers up to n, if n is even a(n) = n(n-1).. = n!, if n is odd a(n) = n(n+1)(n+2)... 'n' terms.