**Number of successions in all the permutations p of [n] such that p(1)=1 and having no 3-sequences. A succession of a permutation p is a position i such that p(i +1) - p(i) = 1.**

*0, 1, 0, 3, 14, 72, 468, 3453, 28782, 267831, 2752828, 30984336, 379125192*

*1 seqfan posts*

Index of A-numbers in seqfan: by ascending order by month by frequency by keyword

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