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Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!) A147730 Number of permutations of 1..n with all sums of 2 through 8 adjacent terms respectively unique. 0 1, 2, 6, 16, 54, 232, 936, 3880, 17302, 81584, 409012, 2138674, 11754832, 66857094, 395646912, 2409911234, 15175510148 (list; graph; refs; listen; history; text; internal format) OFFSET 1,2 LINKS Table of n, a(n) for n=1..17. CROSSREFS Sequence in context: A241066 A045696 A150028 * A147729 A147728 A147727 Adjacent sequences: A147727 A147728 A147729 * A147731 A147732 A147733 KEYWORD nonn AUTHOR R. H. Hardin, Nov 11 2008 STATUS approved

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Last modified August 18 07:06 EDT 2024. Contains 375255 sequences. (Running on oeis4.)