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%I #24 Jul 05 2021 07:08:38
%S 0,1,0,3,7,39,207,1437,11203,99041,975645,10601377,125905445,
%T 1622349059,22539777113,335845307359,5341990288103,90340567900583,
%U 1618553943500599,30623660893656205,610152486797080443,12769086757046132625
%N Number of permutations of [n] with a fixed point but no succession.
%C A succession of a permutation p is a position i such that p(i+1)-p(i) = 1.
%e For n=4 we have 1324, 1432, 2431, 3214, 3241, 4132 and 4213.
%Y Cf. A000166, A002467, A180191, A207819, A207821, A209322, A209325.
%K nonn,more
%O 0,4
%A _Jon Perry_, Jan 19 2013
%E a(11)-a(14) from _Alois P. Heinz_, Jan 20 2013
%E a(15)-a(21) from _Alois P. Heinz_, Jul 04 2021