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.

Showing 1-2 of 2 results.

A187477 Complement of A187476.

Original entry on oeis.org

3, 4, 7, 9, 11, 14, 16, 18, 20, 22, 25, 27, 29, 31, 33, 36, 38, 40, 43, 44, 47, 49, 51, 53, 56, 58, 60, 62, 65, 67, 69, 71, 73, 76, 78, 80, 82, 84, 87, 89, 91, 93, 95, 98, 100, 102, 105, 106, 109, 111, 113, 116, 118, 120, 122, 124, 127, 128, 131, 133, 135, 138
Offset: 1

Views

Author

Clark Kimberling, Mar 10 2011

Keywords

Comments

See A187224.

Crossrefs

Programs

A187478 Rank transform of the sequence floor(3(n-2)/2); complement of A187479.

Original entry on oeis.org

1, 2, 3, 6, 8, 9, 11, 13, 15, 17, 18, 20, 22, 24, 26, 28, 29, 31, 33, 35, 36, 39, 40, 42, 44, 46, 48, 49, 51, 53, 55, 57, 58, 60, 62, 64, 66, 68, 69, 71, 73, 75, 77, 79, 80, 82, 84, 86, 88, 90, 91, 93, 95, 97, 98, 101, 102, 104, 106, 108, 109, 111, 113, 115, 117, 119, 120
Offset: 1

Views

Author

Clark Kimberling, Mar 10 2011

Keywords

Comments

See A187224. Although the first term of floor(3(n-2)/2) is negative, we can replace it by 0 without affecting the same joint rankings; thus, the procedure described at A187224 applies.

Crossrefs

Programs

  • Mathematica
    seqA = Table[Floor[3(n-2)/2], {n, 1, 180}]
      seqB = Table[n, {n, 1, 80}];        (* A000027 *)
    jointRank[{seqA_, seqB_}] := {Flatten@Position[#1, {_, 1}],
    Flatten@Position[#1, {_, 2}]} &[Sort@Flatten[{{#1, 1} & /@ seqA,
    {#1, 2} & /@ seqB}, 1]];
    limseqU = FixedPoint[jointRank[{seqA, #1[[1]]}] &, jointRank[{seqA, seqB}]][[1]]                                     (* A187478 *)
    Complement[Range[Length[seqA]], limseqU]  (* A187479 *)
    (* by Peter J. C. Moses, Mar 10 2011 *)
Showing 1-2 of 2 results.