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.

A218030 Numbers k equal to half of the product of the nonzero (base-10) digits of k^2.

Table of values

n a(n)
1 2
2 5
3 54
4 648
5 2160
6 337169025526136832000
7 685506275314921762068267522458966662115416623590907309075726336000000
8 46641846972427276691124922228108091690332947069125333309512419901440000000000

List of values

[2, 5, 54, 648, 2160, 337169025526136832000, 685506275314921762068267522458966662115416623590907309075726336000000, 46641846972427276691124922228108091690332947069125333309512419901440000000000]

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

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