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A178849 n-th integer having n-th prime-containing prime signature. 0
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 (list; graph; refs; listen; history; text; internal format)
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

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Last modified September 24 04:27 EDT 2017. Contains 292403 sequences.