A053340 Terms of A050530 with four prime divisors.

5865, 8645, 10005, 10465, 13685, 15045, 15295, 16269, 18285, 20445, 22015, 24871, 26845, 27965, 28405, 28815, 29733, 30705, 31031, 31255, 33215, 35245, 36105, 37037, 37145, 37365, 37765, 37995, 38985, 39831, 40579, 41041, 43435, 44135

Offset: 1

Author

Labos Elemer, Jan 05 2000

Keywords

• nonn

Examples

			The 3rd entry is 10005=3*5*23*29, also in A050530 and A051953(10005)=5077 is a prime.
		

Links

• Amiram Eldar, Table of n, a(n) for n = 1..10000

Crossrefs

Cf. A051953, A050530.

Formula

n=pqrs, having 4 prime divisors, squarefree and n-phi(n) is a prime