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.

A274288 Numbers that are a product of distinct numbers in row 4 of the Wythoff array, A035513.

Original entry on oeis.org

9, 15, 24, 39, 63, 102, 135, 165, 216, 267, 351, 360, 432, 567, 585, 699, 918, 936, 945, 1131, 1485, 1512, 1530, 1830, 2403, 2448, 2457, 2475, 2961, 3240, 3888, 3960, 3978, 4005, 4791, 5265, 6291, 6408, 6426, 6435, 6480, 7752, 8424, 8505, 10179, 10368, 10395
Offset: 1

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Author

Clark Kimberling, Jun 17 2016

Keywords

Comments

See the Comment on distinct-product sequences in A160009.

Examples

			135 = 9*15, 3240 = 9*15*24.
		

Crossrefs

Programs

  • Mathematica
    f[1] = 9; f[2] = 15; z = 33; f[n_] := f[n - 1] + f[n - 2]; f = Table[f[n], {n, 1, z}]; f
    s = {1}; Do[s = Union[s, Select[s*f[[i]], # <= f[[z]] &]], {i, z}]; s1 = Rest[s]