cp's OEIS Frontend

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.

A099187 Let D(n) = n*(9*n^2-9*n+2)/2 then a(k+1) = D(a(k)) and a(0) = 1.

Table of values

n a(n)
1 1
2 20
3 34220
4 180318314012420
5 26383476911029432816173777932463879690054620

List of values

[1, 20, 34220, 180318314012420, 26383476911029432816173777932463879690054620]

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

Content is available under The OEIS End-User License Agreement.