A177308 Number of permutations of 7 copies of 1..n with all adjacent differences <= 2 in absolute value.
1, 1, 3432, 399072960, 5188083048720, 39956935830445136, 452976400962846092338
Offset: 0
Keywords
Crossrefs
Cf. A172603.
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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