A175720 Duplicate of A173605.
1, 16, 240, 17293822569102704640
Offset: 1
Keywords
Examples
a(3) = 240 = the smallest number with 16 + 4 = 20 divisors.
Formula
A000005(a(n)) = a(n-1) + 4 for n >= 2.
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.