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.

A193166 Numbers that are not the product of consecutive primes.

Original entry on oeis.org

4, 8, 9, 10, 12, 14, 16, 18, 20, 21, 22, 24, 25, 26, 27, 28, 32, 33, 34, 36, 38, 39, 40, 42, 44, 45, 46, 48, 49, 50, 51, 52, 54, 55, 56, 57, 58, 60, 62, 63, 64, 65, 66, 68, 69, 70, 72, 74, 75, 76, 78, 80, 81, 82, 84, 85, 86, 87, 88, 90, 91, 92, 93, 94, 95
Offset: 1

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Author

Reinhard Zumkeller, Aug 26 2011

Keywords

Comments

A192280(a(n)) = 0: complement of A073485.
Union of A013929 and A073486.

Crossrefs

Cf. A025475.

Programs

  • Haskell
    a193166 n = a193166_list !! (n-1)
    a193166_list = filter ((== 0) . a192280) [1..]
    -- Reinhard Zumkeller, May 28 2012, Aug 26 2011