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.

A089995 Products of pairs of distinct, non-consecutive primes.

Original entry on oeis.org

10, 14, 21, 22, 26, 33, 34, 38, 39, 46, 51, 55, 57, 58, 62, 65, 69, 74, 82, 85, 86, 87, 91, 93, 94, 95, 106, 111, 115, 118, 119, 122, 123, 129, 133, 134, 141, 142, 145, 146, 155, 158, 159, 161, 166, 177, 178, 183, 185, 187, 194, 201, 202, 203, 205, 206, 209, 213
Offset: 1

Views

Author

Reinhard Zumkeller, Nov 19 2003

Keywords

Comments

m belongs to the sequence iff m=A001358(k) for some k and A089994(k)>0.

Crossrefs

Programs

  • Mathematica
    With[{nn = 213}, TakeWhile[#, # <= nn &] &@ Union@ Flatten@ Table[Function[p, p Prime@ Range[n + 2, Prime@ PrimePi[nn/p]]]@ Prime@ n, {n, Sqrt@ nn}]] (* Michael De Vlieger, Feb 02 2017 *)