A177314 Number of permutations of 9 copies of 1..n with all adjacent differences <= 2 in absolute value.
1, 1, 48620, 227873431500, 66341857216154520, 10150867545062935511900
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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