A387126 - cp's OEIS frontend

A387126 Triangle read by rows: T(n, k) = (n! / (n - k)!) * Product_{k=1..n} radical(k), where radical(n) is the product of distinct prime factors of n, cf. A007947.

n	a(n)
0	1
1	1
2	1
3	2
4	4
5	4
6	6
7	18
8	36
9	36
10	12
11	48
12	144
13	288
14	288
15	60
16	300
17	1200
18	3600
19	7200
20	7200
21	360
22	2160
23	10800
24	43200
25	129600
26	259200
27	259200
28	2520
29	17640
30	105840
31	529200
32	2116800
33	6350400
34	12700800
35	12700800
36	5040
37	40320
38	282240
39	1693440
40	8467200
41	33868800
42	101606400
43	203212800
44	203212800

[1, 1, 1, 2, 4, 4, 6, 18, 36, 36, 12, 48, 144, 288, 288, 60, 300, 1200, 3600, 7200, 7200, 360, 2160, 10800, 43200, 129600, 259200, 259200, 2520, 17640, 105840, 529200, 2116800, 6350400, 12700800, 12700800, 5040, 40320, 282240, 1693440, 8467200, 33868800, 101606400, 203212800, 203212800]

cp's OEIS Frontend

A387126 Triangle read by rows: T(n, k) = (n! / (n - k)!) * Product_{k=1..n} radical(k), where radical(n) is the product of distinct prime factors of n, cf. A007947.

Table of values

List of values