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A175176 Number of vector sums of two permutations of 1,2,...,n. 0
1, 3, 19, 201, 3081, 62663, 1598185, 49158651, 1772832643, 73394322615 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

Also, number of vector differences of two permutations of 1,2,...,n.

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

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.

CROSSREFS

Sequence in context: A288693 A195895 A127502 * A233336 A208897 A027546

Adjacent sequences:  A175173 A175174 A175175 * A175177 A175178 A175179

KEYWORD

nonn,more

AUTHOR

R. H. Hardin Feb 28 2010

STATUS

approved

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Last modified May 19 04:20 EDT 2022. Contains 353826 sequences. (Running on oeis4.)