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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.

A220378 With p as the n-th prime, a(n) is the smallest number such that all sums of a(n) squarefree addends having product (p#)^(a(n)-1) are composite.

Table of values

n a(n)
1 5
2 21
3 134
4 1365
5 1627177

List of values

[5, 21, 134, 1365, 1627177]

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

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