cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A109988 3-almost primes (A014612) ordered alphabetically by where they occur in A000052.

Original entry on oeis.org

8, 18, 50, 52, 45, 44, 42, 98, 99, 92, 70, 78, 75, 76
Offset: 1

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Author

Jonathan Vos Post, Jul 07 2005

Keywords

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.

Examples

			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.
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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