A177315 Number of permutations of 9 copies of 1..n with all adjacent differences <= 3 in absolute value.
1, 1, 48620, 227873431500, 21452752266265320000, 230729955958244519983206000
Offset: 0
Keywords
Crossrefs
Cf. A172613.
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.
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