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A132796
Second diagonal of Gely numbers.
1
0, 1, 0, 5, 6, 21, 36, 85, 162, 341, 672, 1365, 2718, 5461, 10908, 21845, 43674, 87381, 174744, 349525, 699030, 1398101, 2796180, 5592405, 11184786, 22369621, 44739216, 89478485, 178956942, 357913941, 715827852
OFFSET
0,4
REFERENCES
Charles 0. Gely, Un tableau de conversion des polynomes cyclotomiques cousin des nombres Euleriens, Preprint Univ. Paris 7, 1999.
Olivier Gérard, Quelques facons originales de compter les permutations, submitted to Knuth07.
Olivier Gérard and Karol Penson, Set partitions, Multiset permutations and bi-permutations, in preparation.
FORMULA
G(n,n-1)= Sum((-1)^j (n+1 choose j) ((n-1-j)^(n+1)-1)/(n-1-j-1= ), 0<=j<=n-1).
CROSSREFS
Second diagonal of A132795.
Sequence in context: A060423 A037951 A095308 * A006492 A110344 A224915
KEYWORD
nonn,easy
AUTHOR
Olivier Gérard, Aug 31, 2007
STATUS
approved