A048803 - cp's OEIS frontend

A048803 a(n) = Product_{k=1..n} rad(k), where rad(n) is the product of distinct prime factors of n, cf. A007947.

n	a(n)
0	1
1	1
2	2
3	6
4	12
5	60
6	360
7	2520
8	5040
9	15120
10	151200
11	1663200
12	9979200
13	129729600
14	1816214400
15	27243216000
16	54486432000
17	926269344000
18	5557616064000
19	105594705216000
20	1055947052160000
21	22174888095360000
22	487847538097920000
23	11220493376252160000
24	67322960257512960000

[1, 1, 2, 6, 12, 60, 360, 2520, 5040, 15120, 151200, 1663200, 9979200, 129729600, 1816214400, 27243216000, 54486432000, 926269344000, 5557616064000, 105594705216000, 1055947052160000, 22174888095360000, 487847538097920000, 11220493376252160000, 67322960257512960000]

cp's OEIS Frontend

A048803 a(n) = Product_{k=1..n} rad(k), where rad(n) is the product of distinct prime factors of n, cf. A007947.

Table of values

List of values