A374317 - cp's OEIS frontend

A374317 For any n > 0, let b_n(n+1) = 1, and for k = 1..n, if k divides b_n(k+1) then b_n(k) = b_n(k+1) / k otherwise b_n(k) = b_n(k+1) * k; a(n) = b_n(1).

n	a(n)
1	1
2	2
3	6
4	6
5	30
6	20
7	140
8	70
9	70
10	7
11	77
12	8316
13	108108
14	858
15	5720
16	1430
17	24310
18	48620
19	923780
20	46189
21	3879876
22	176358
23	4056234
24	2704156
25	676039
26	104006
27	312018
28	44574
29	1292646
30	4308820
31	133573420
32	267146840
33	2203961430
34	259289580
35	363005412
36	3267048708

[1, 2, 6, 6, 30, 20, 140, 70, 70, 7, 77, 8316, 108108, 858, 5720, 1430, 24310, 48620, 923780, 46189, 3879876, 176358, 4056234, 2704156, 676039, 104006, 312018, 44574, 1292646, 4308820, 133573420, 267146840, 2203961430, 259289580, 363005412, 3267048708]

cp's OEIS Frontend

A374317 For any n > 0, let b_n(n+1) = 1, and for k = 1..n, if k divides b_n(k+1) then b_n(k) = b_n(k+1) / k otherwise b_n(k) = b_n(k+1) * k; a(n) = b_n(1).

Table of values

List of values