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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.

A261564 a(1)=2; thereafter a(n) = mpf(1+Product_{k=1..n-1} a(k)), where mpf(n) = f-th prime factor with multiplicity of n, for f=ceiling(bigomega(n)/2).

Table of values

n a(n)
1 2
2 3
3 7
4 43
5 13
6 53
7 5
8 6221671
9 38709183810571
10 25621
11 10300271
12 2731
13 1079927141307582051252331702244209088763871

List of values

[2, 3, 7, 43, 13, 53, 5, 6221671, 38709183810571, 25621, 10300271, 2731, 1079927141307582051252331702244209088763871]

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

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