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.

A215025 Decimal equivalent of binary number in A215023.

Original entry on oeis.org

0, 2, 9, 8, 10, 37, 36, 33, 32, 34, 41, 40, 42, 149, 148, 145, 144, 146, 133, 132, 129, 128, 130, 137, 136, 138, 165, 164, 161, 160, 162, 169, 168, 170, 597, 596, 593, 592, 594, 581, 580, 577, 576, 578, 585, 584, 586, 533, 532, 529, 528, 530, 517, 516, 513, 512
Offset: 0

Views

Author

N. J. A. Sloane, Aug 03 2012

Keywords

Crossrefs

Programs

  • Mathematica
    ind[n_] := Floor[Log[Abs[n]*Sqrt[5] + 1/2]/Log[GoldenRatio]]; f[1] = 1; f[n_] := If[n > 0, i = ind[n - 1]; If[EvenQ[i], i++]; i, i = ind[-n]; If[OddQ[i], i++]; i]; a[n_] := Module[{k = n, s = 0}, While[k != 0, i = f[k]; s += 2^(i - 1); k -= Fibonacci[-i]]; s]; Table[a[n], {n, 0, -100, -1}] (* Amiram Eldar, Oct 15 2019 *)

Extensions

More terms from Amiram Eldar, Oct 11 2019