A378721 - cp's OEIS frontend

A378721 a(n) is the denominator of the asymptotic density of numbers whose third smallest prime divisor is prime(n).

n	a(n)
1	1
2	1
3	30
4	30
5	165
6	15015
7	36465
8	62985
9	7436429
10	11849255
11	73465381
12	33426748355
13	50708377254535
14	436092044389001
15	1863302371480277
16	1086305282573001491
17	64092011671807087969
18	3909612711980232366109
19	8449808119441147371913
20	18598027670889965365580513
21	3543193335582015099413

[1, 1, 30, 30, 165, 15015, 36465, 62985, 7436429, 11849255, 73465381, 33426748355, 50708377254535, 436092044389001, 1863302371480277, 1086305282573001491, 64092011671807087969, 3909612711980232366109, 8449808119441147371913, 18598027670889965365580513, 3543193335582015099413]

cp's OEIS Frontend

A378721 a(n) is the denominator of the asymptotic density of numbers whose third smallest prime divisor is prime(n).

Table of values

List of values