OFFSET
1,4
COMMENTS
Sequence suggested by Leroy Quet.
FORMULA
a(n) = n-th row sum of A097278.
EXAMPLE
a(4) = 3: the 3 permutations are <3,2,1,4>, <4,2,1,3> and <4,3,1,2>.
CROSSREFS
KEYWORD
easy,nonn,less
AUTHOR
David Wasserman, Aug 05 2004
STATUS
approved