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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.

A135810 Number of coincidence-free length n lists of 4-tuples with all numbers 1..n in tuple position k, for k=1..4.

Table of values

n a(n)
0 1
1 0
2 15
3 1250
4 326685
5 205713924
6 267499350955
7 643364455632870
8 2637753876195952185
9 17316358344270678304520
10 173227930768100416550798151
11 2536860701329458663625695526890

List of values

[1, 0, 15, 1250, 326685, 205713924, 267499350955, 643364455632870, 2637753876195952185, 17316358344270678304520, 173227930768100416550798151, 2536860701329458663625695526890]

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

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