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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A386672 Integers x such that there exist four integers 0

Original entry on oeis.org

46, 94, 946, 1139, 1680, 3804, 4200, 29975, 31143, 48560, 53428, 63840, 74178, 121400, 125280, 135720, 279300, 483392, 679952
Offset: 1

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Author

S. I. Dimitrov, Jul 28 2025

Keywords

Comments

The numbers x, y, z, t and w form a sigma-quintic quintuple.
Other terms of the sequence: 5446350, 20201728, 326481408.

Examples

			(46, 19, 43, 47, 67) is such a quintuple because sigma(46)^5 = 72^5 = 46^5 + 19^5 + 43^5 + 47^5 + 67^5.
Other examples: (94, 38, 86, 92, 134), (946, 418, 1012, 1034, 1474), (1139, 323, 731, 782, 799), (63840, 144480, 154560, 157920, 225120).
		

Crossrefs

Extensions

More terms from Michel Marcus, Jul 29 2025
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