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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.

A203415 Vandermonde determinant of the first n nonprimes (A018252).

Table of values

n a(n)
1 1
2 3
3 30
4 1680
5 201600
6 87091200
7 1103619686400
8 275463473725440000
9 240529195987579699200000
10 1163776461866305616609280000000
11 344605941225348705438623229542400000000
12 3717059729911125118574880410324812431360000000000

List of values

[1, 3, 30, 1680, 201600, 87091200, 1103619686400, 275463473725440000, 240529195987579699200000, 1163776461866305616609280000000, 344605941225348705438623229542400000000, 3717059729911125118574880410324812431360000000000]

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

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