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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.

A124374 Primes of the form !(k + 1)/2 = Sum_{i=0..k} i!/2.

Table of values

n a(n)
1 2
2 5
3 17
4 2957
5 23117
6 204557
7 2018957
8 4578979328975537786697650470157
9 12572230784049013026617689884981971446439568309146114097251787122217783800812199225999909965168264460210470157

List of values

[2, 5, 17, 2957, 23117, 204557, 2018957, 4578979328975537786697650470157, 12572230784049013026617689884981971446439568309146114097251787122217783800812199225999909965168264460210470157]

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

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