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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.

A337302 Number of X-based filling of diagonals in a diagonal Latin square of order n with the main diagonal in ascending order.

Table of values

n a(n)
0 1
1 1
2 0
3 0
4 4
5 4
6 80
7 80
8 4752
9 4752
10 440192
11 440192
12 59245120
13 59245120
14 10930514688
15 10930514688
16 2649865335040
17 2649865335040
18 817154768973824
19 817154768973824
20 312426715251262464
21 312426715251262464
22 145060238642780180480
23 145060238642780180480

List of values

[1, 1, 0, 0, 4, 4, 80, 80, 4752, 4752, 440192, 440192, 59245120, 59245120, 10930514688, 10930514688, 2649865335040, 2649865335040, 817154768973824, 817154768973824, 312426715251262464, 312426715251262464, 145060238642780180480, 145060238642780180480]

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

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