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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.

A067803 Numbers n such that sigma(n)-sigma(n+1)=n.

Original entry on oeis.org

532, 954, 104944, 918080, 10368512, 25316030960, 35053995440, 45883878740
Offset: 1

Views

Author

Benoit Cloitre, Feb 07 2002

Keywords

Comments

Mersenne primes are solutions to sigma(n+1)-sigma(n)=n. Conjecture: sequence gives even values only.
Subsequence of A223136. a(9) > 10^13. - Giovanni Resta, Jun 04 2016

Crossrefs

Cf. A223136.

Extensions

a(4)-a(8) from Donovan Johnson, Feb 01 2009

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