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A108634 Semiprimes with ordered digits. 2
4, 6, 9, 14, 15, 22, 25, 26, 33, 34, 35, 38, 39, 46, 49, 55, 57, 58, 69, 77, 111, 115, 118, 119, 122, 123, 129, 133, 134, 145, 146, 155, 158, 159, 166, 169, 177, 178, 226, 235, 237, 247, 249, 259, 267, 278, 289, 299, 334, 335, 339, 346, 355, 358, 377, 445, 446 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..57.

MATHEMATICA

Select[Range[1000], Plus@@Last/@FactorInteger[ # ]==2&&OrderedQ[IntegerDigits[ # ]]&]

CROSSREFS

Sequence in context: A288379 A112381 A182150 * A135355 A350069 A245383

Adjacent sequences:  A108631 A108632 A108633 * A108635 A108636 A108637

KEYWORD

nonn,base

AUTHOR

Zak Seidov, Jun 14 2005

STATUS

approved

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Last modified May 23 18:08 EDT 2022. Contains 353993 sequences. (Running on oeis4.)