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.

A355574 Number of nonnegative integers k with n digits such that x^2 - s*x + p has only integer roots, where s and p denote the sum and product of the digits of k respectively.

Table of values

n a(n)
1 2
2 90
3 223
4 2686
5 31601
6 370894
7 4220160
8 46962379
9 512600193

List of values

[2, 90, 223, 2686, 31601, 370894, 4220160, 46962379, 512600193]

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

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