A178849 n-th integer having n-th prime-containing prime signature.

2, 9, 14, 343, 44, 28561, 135, 110, 6436343, 1225, 464, 228, 4750104241, 3087, 1376, 696, 2488651484819, 15376, 1452, 4288, 1218, 456533, 1968, 3936588805702081, 89888, 2646, 12928, 2070, 810448, 5152, 8594754748609397887, 440896, 7938

Offset: 1

Author

Will Nicholes, Jun 17 2010

Keywords

• nonn

Comments

This sequence forms the diagonal of the table (A095904) containing all of the integers >= 2, ordered by prime signature.

The first row of the table is A025487 (starting with n=2),

The first column of the table is the primes (A000040).

The description for this sequence specifies "prime-containing" to exclude the prime signature for 1, which is also excluded from A095904.

Examples

			The 5th prime-containing prime signature (i.e. excluding the prime signature for 1) is {1,2}.
The 5th integer to have that prime signature is 44 (see A054753 for a list).
Therefore a(5) is 44.
		

Crossrefs

Cf. A025487, A000040, A095904.

Extensions

Extended by Ray Chandler, Aug 01 2010