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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.

A367229 Fermat pseudoprimes to base 2 that are products of two Mersenne numbers (not necessarily distinct) that are larger than 1.

Table of values

n a(n)
1 1905
2 15841
3 129921
4 8322945
5 66977281
6 4395899025409
7 4398012825601
8 140735340806145
9 36892925197465616385
10 2342736497361113055105
11 4951750712408555360305545217
12 39304596247310823728047193985
13 2535301191011725837253847547905
14 1298074214624262174166747352924161

List of values

[1905, 15841, 129921, 8322945, 66977281, 4395899025409, 4398012825601, 140735340806145, 36892925197465616385, 2342736497361113055105, 4951750712408555360305545217, 39304596247310823728047193985, 2535301191011725837253847547905, 1298074214624262174166747352924161]

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

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