For each permutation p of {1,2,...,n} define minabsjump(p) = min(|p(i) - i|, 1<=i<=n); a(n) is the sum of minabsjumps of all p.

A129118

For each permutation p of {1,2,...,n} define minabsjump(p) = min(|p(i) - i|, 1<=i<=n); a(n) is the sum of minabsjumps of all p.

Terms

    a(0) =0a(1) =1a(2) =2a(3) =10a(4) =48a(5) =295a(6) =2068a(7) =16654a(8) =150382a(9) =1508500a(10) =16631696a(11) =199966907a(12) =2603709640a(13) =36501212971a(14) =548150650582

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