%I #9 Aug 04 2015 13:58:43
%S 1,2,4,2,10,12,2,24,48,34,12,2,66,196,230,144,70,12,2
%N Irregular triangle read by rows: T(n,k) = number of permutations of n elements which have k overlaps.
%D A. Sade, Sur les Chevauchements des Permutations, published by the author, Marseille, 1949.
%H Albert Sade, <a href="/A000108/a000108_17.pdf">Sur les Chevauchements des Permutations</a>, published by the author, Marseille, 1949. [Annotated scanned copy]
%e Triangle begins:
%e 1,
%e 2,
%e 4,2,
%e 10,12,2,
%e 24,48,34,12,2,
%e 66,196,230,144,70,12,2,
%e ...
%Y Cf. A259706.
%K nonn,tabf,more
%O 2,2
%A _N. J. A. Sloane_, Jul 05 2015
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