A079854 - cp's OEIS frontend

A079854 a(1) = 1, a(k) divides a(k+r) for all k and r and the ratios a(k+r)/a(k) are all different.

n	a(n)
1	1
2	1
3	2
4	6
5	24
6	120
7	840
8	6720
9	60480
10	604800
11	6652800
12	86486400
13	1210809600
14	18162144000
15	308756448000
16	4940103168000
17	88921857024000
18	1689515283456000
19	35479820952576000
20	780556060956672000
21	17952789402003456000

[1, 1, 2, 6, 24, 120, 840, 6720, 60480, 604800, 6652800, 86486400, 1210809600, 18162144000, 308756448000, 4940103168000, 88921857024000, 1689515283456000, 35479820952576000, 780556060956672000, 17952789402003456000]

cp's OEIS Frontend

A079854 a(1) = 1, a(k) divides a(k+r) for all k and r and the ratios a(k+r)/a(k) are all different.

Table of values

List of values