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.

A203773 Vandermonde sequence using x^2 + y^2 applied to (0,1,1,2,2,...,floor(n/2)).

Table of values

n a(n)
1 1
2 1
3 2
4 200
5 160000
6 24336000000
7 66627100800000000
8 77020928524800000000000000
9 2849158187989401600000000000000000000
10 78690953969671659336819671040000000000000000000000

List of values

[1, 1, 2, 200, 160000, 24336000000, 66627100800000000, 77020928524800000000000000, 2849158187989401600000000000000000000, 78690953969671659336819671040000000000000000000000]

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

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