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

1,1

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.

Links

Table of n, a(n) for n=1..33.

Example

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.

Sequence in context: A024472 A279089 A128780 * A217367 A076208 A057481

Adjacent sequences: A178846 A178847 A178848 * A178850 A178851 A178852

Keyword

nonn

Author

Will Nicholes, Jun 17 2010

Extensions

Extended by Ray Chandler, Aug 01 2010

Status

approved