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.

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A113591 Least multiple of composite(n), containing only composite digits (0,4,6,8,9).

Original entry on oeis.org

0, 4, 6, 8, 9, 40, 48, 84, 60, 48, 90, 40, 84, 44, 48, 400, 468, 486, 84, 60, 64, 66, 68, 490, 468, 494, 468, 40, 84, 44, 90, 46, 48, 49, 400, 408, 468, 486, 440, 448, 684, 406, 60, 496, 6048, 64, 4680, 66, 68, 69, 490, 648, 444, 600, 608, 4004, 468, 80, 486, 984, 84
Offset: 0

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Author

Amarnath Murthy, Nov 07 2005

Keywords

Comments

The sequence A002808 is extended with A002808(0)=0 to define "composite" here. Every term occurs in A001744. - R. J. Mathar, Aug 28 2007

Examples

			a(7) = 84, composite (7) =14, term corresponding to 14 is 84.

Crossrefs

Cf. A002808, A078240, A113590.

Formula

a(n) = A078240(A002808(n)) for n > 0. - Andrew Howroyd, Sep 17 2024

Extensions

Corrected and extended by R. J. Mathar, Aug 28 2007
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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