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.

A325418 Complement of A325417.

Original entry on oeis.org

2, 4, 6, 10, 14, 16, 18, 22, 24, 25, 26, 28, 30, 34, 37, 38, 40, 42, 46, 52, 54, 58, 61, 62, 64, 66, 70, 72, 78, 82, 86, 88, 90, 94, 96, 97, 98, 100, 102, 106, 109, 110, 112, 114, 118, 120, 124, 126, 130, 133, 134, 136, 138, 142, 145, 146, 148, 150, 151, 152
Offset: 1

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Author

Clark Kimberling, Apr 24 2019

Keywords

References

  • These are the numbers 2x and 3x+1 as x ranges through the numbers in A325417.

Crossrefs

Cf. A325417.

Programs

  • Mathematica
    a = {1}; Do[AppendTo[a, NestWhile[# + 1 &, Last[a] + 1,
    Apply[Or, Map[MemberQ[a, #] &, Select[Flatten[{#/2, (# - 1)/3}],
    IntegerQ]]] &]], {150}]; a     (* A325417 *)
    Complement[Range[Last[a]], a]  (* A325418 *)
    (* Peter J. C. Moses, Apr 23 2019 *)