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%I A175176 #15 Jul 02 2023 09:56:08
%S A175176 1,1,3,19,201,3081,62663,1598185,49158651,1772832643,73394322615,
%T A175176 3431751900897,178904412061235,10290301519034057,647401635395456919,
%U A175176 44227879174393279133
%N A175176 Number of vector sums of two permutations of 1,2,...,n.
%C A175176 Also, number of vector differences of two permutations of 1,2,...,n.
%C A175176 Number of distinct sums up to the order of components is given by A019589. - _Max Alekseyev_, Jun 19 2023
%C A175176 a(n) <= A362968(n). - _Max Alekseyev_, Jun 19 2023
%e A175176 The permutation sums for n=2 are (1,2) + (1,2) = (2,4); (1,2) + (2,1) = (2,1) + (1,2) = (3,3); (2,1) + (2,1) = (4,2); so a(2)=3.
%Y A175176 Cf. A019589, A362968.
%K A175176 nonn,more
%O A175176 0,3
%A A175176 _R. H. Hardin_, Feb 28 2010
%E A175176 a(0)=1 prepended by _Alois P. Heinz_, Jun 19 2023
%E A175176 a(11)-a(15) from _Max Alekseyev_, Jul 2 2023

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