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.

A384192 Complement of A384191.

Original entry on oeis.org

4, 5, 6, 13, 14, 15, 19, 20, 21, 28, 29, 30, 37, 38, 39, 43, 44, 45, 52, 53, 54, 58, 59, 60, 67, 68, 69, 76, 77, 78, 82, 83, 84, 91, 92, 93, 100, 101, 102, 106, 107, 108, 115, 116, 117, 121, 122, 123, 130, 131, 132, 139, 140, 141, 145, 146, 147, 154, 155
Offset: 1

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Author

Clark Kimberling, May 21 2025

Keywords

Crossrefs

Cf. A137709, A384191 (complement).

Programs

  • Mathematica
    k = 3; p = k*Array[Floor[#*GoldenRatio] &, 100] ;
    seq = ConstantArray[1, Last[p]];
    seq[[p]] = k + 1;
    u = Join[{1}, Accumulate[seq] + 1]  (* A384191 *)
    Complement[Range[Last[#]], #] &[u]  (* A383192 *)
    (* Peter J. C. Moses, May 12 2025 *)