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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.

A140412 Determinants of the n X n matrices whose (i,j)-elements are lcm(i^2, j^2).

Table of values

n a(n)
1 1
2 -12
3 864
4 -41472
5 24883200
6 21499084800
7 -50565847449600
8 9708642710323200
9 -6291200476289433600
10 -45296643429283921920000
11 657707262593202546278400000
12 2273036299522107999938150400000
13 -64536046616031690334243966156800000

List of values

[1, -12, 864, -41472, 24883200, 21499084800, -50565847449600, 9708642710323200, -6291200476289433600, -45296643429283921920000, 657707262593202546278400000, 2273036299522107999938150400000, -64536046616031690334243966156800000]

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

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