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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.

A336421 Number of ways to choose a divisor of a divisor, both having distinct prime exponents, of the n-th superprimorial number A006939(n).

Table of values

n a(n)
0 1
1 3
2 13
3 76
4 571
5 5309
6 59341
7 780149

List of values

[1, 3, 13, 76, 571, 5309, 59341, 780149]

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

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