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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.

A203677 Vandermonde sequence using x^2 + y^2 applied to (1,4,9,...,n^2).

Table of values

n a(n)
1 1
2 17
3 135218
4 3185418047264
5 795022479172023183220864
6 5554004683279652358469137440150614769664
7 2378852972988348412358457063032448409092378064835941488918528

List of values

[1, 17, 135218, 3185418047264, 795022479172023183220864, 5554004683279652358469137440150614769664, 2378852972988348412358457063032448409092378064835941488918528]

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

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