A136357 - cp's OEIS frontend

A136357 Increasing sequence obtained by union of two sequences A136354 and {b(n)}, where b(n) is the smallest composite number m such that m+1 is prime and the set of distinct prime factors of m consists of the first n primes.

n	a(n)
1	4
2	6
3	9
4	15
5	30
6	105
7	210
8	2310
9	3465
10	15015
11	120120
12	765765
13	4084080
14	33948915
15	106696590
16	334639305
17	892371480
18	3234846615
19	71166625530
20	100280245065
21	200560490130
22	3710369067405
23	29682952539240
24	1369126185872445

[4, 6, 9, 15, 30, 105, 210, 2310, 3465, 15015, 120120, 765765, 4084080, 33948915, 106696590, 334639305, 892371480, 3234846615, 71166625530, 100280245065, 200560490130, 3710369067405, 29682952539240, 1369126185872445]

cp's OEIS Frontend

A136357 Increasing sequence obtained by union of two sequences A136354 and {b(n)}, where b(n) is the smallest composite number m such that m+1 is prime and the set of distinct prime factors of m consists of the first n primes.

Table of values

List of values