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A109988

3-almost primes (A014612) ordered alphabetically by where they occur in A000052.

8, 18, 50, 52, 45, 44, 42, 98, 99, 92, 70, 78, 75, 76

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OFFSET

1,1

COMMENTS

A109986 is primes ordered alphabetically by where they occur in A000052. A109987 is semiprimes ordered alphabetically by where they occur in A000052. A109989 is 4-almost primes ordered alphabetically by where they occur in A000052.

LINKS

Table of n, a(n) for n=1..14.

EXAMPLE

a(1) = 8 because eight is the first 3-almost prime in alphabetical order.

a(4) = 18 because eighteen is the first 2-digit 3-almost prime in alphabetical order.

CROSSREFS

Cf. A000052, A014612, A109986, A109987.

Sequence in context: A300161 A034714 A153388 * A335440 A066721 A079704

Adjacent sequences: A109985 A109986 A109987 * A109989 A109990 A109991

KEYWORD

base,easy,nonn,word

AUTHOR

Jonathan Vos Post, Jul 07 2005

STATUS

approved

URL: https://oeis.org/A109988

⇱ A109988 - OEIS