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.

A231755 Primes of the form (2^n-1)/3 - n.

Table of values

n a(n)
1 331
2 1398079
3 89478457
4 393530540239137101071
5 1730765619511609209510165443073253
6 8173309551284740577911184144801648979299941984979211421
7 2142584059011987034055949456454883470029603991710390447068299

List of values

[331, 1398079, 89478457, 393530540239137101071, 1730765619511609209510165443073253, 8173309551284740577911184144801648979299941984979211421, 2142584059011987034055949456454883470029603991710390447068299]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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