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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A129600 Array A(i,j) of binary run-length encoded product of i and j, read by ascending antidiagonals.

Original entry on oeis.org

0, 1, 1, 2, 3, 2, 3, 4, 4, 3, 4, 7, 6, 7, 4, 5, 8, 8, 8, 8, 5, 6, 11, 12, 15, 12, 11, 6, 7, 12, 9, 16, 16, 9, 12, 7, 8, 15, 14, 23, 24, 23, 14, 15, 8, 9, 16, 16, 24, 19, 19, 24, 16, 16, 9, 10, 19, 24, 31, 28, 13, 28, 31, 24, 19, 10, 11, 20, 17, 32, 32, 17, 17, 32, 32, 17, 20, 11, 12
Offset: 0

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Author

Antti Karttunen, May 01 2007

Keywords

Crossrefs

Cf. A003991, A129601.
Cf. A129602 (center diagonal), A014601 (row 1 apart from the first term).

Formula

A(i,j) = A075158(((A075157(i)+1)*(A075157(j)+1)) - 1).

Extensions

Name edited by Michel Marcus, Dec 01 2021
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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