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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A075131 Picture-perfect numbers of form 57*p for p in A075130. The decimal reversal is equal to the sum of the reversed proper divisors.

Original entry on oeis.org

7980062073, 79862699373, 798006269373, 7986207926373, 79862079269373, 798062073062073, 798620736269373, 7980000620792073, 7980006269999373, 7980620730626373, 7980626373062073, 7980626379269373, 7986207306269373
Offset: 1

Views

Author

Jens Kruse Andersen, Sep 04 2002

Keywords

Comments

All known picture-perfect numbers are of this form, except the first 4 in A069942. - Jens Kruse Andersen, May 06 2008

Examples

			a(4)=57*140108910989=7986207926373.

Links

Crossrefs

a(n) = 57*A075130(n)
Cf. A075130, A069942.

Extensions

Edited by Jens Kruse Andersen, May 06 2008
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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