A335498 - cp's OEIS frontend

A335498 a(n) is the least odd number k such that Omega(k) = n and Omega(k+2) = n+1, where Omega(k) is the number of prime factors of k (A001222).

n	a(n)
0	1
1	7
2	25
3	873
4	1375
5	41875
6	903123
7	1015623
8	49671873
9	200921875
10	1157734375
11	41898828123
12	496308203125
13	10506958984375
14	7739037109375
15	382999267578123
16	17016876976778523
17	46804302197265625
18	80713609326109375

[1, 7, 25, 873, 1375, 41875, 903123, 1015623, 49671873, 200921875, 1157734375, 41898828123, 496308203125, 10506958984375, 7739037109375, 382999267578123, 17016876976778523, 46804302197265625, 80713609326109375]

cp's OEIS Frontend

A335498 a(n) is the least odd number k such that Omega(k) = n and Omega(k+2) = n+1, where Omega(k) is the number of prime factors of k (A001222).

Table of values

List of values