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A032110 "BIJ" (reversible, indistinct, labeled) transform of 0,1,1,1... 0
0, 1, 1, 4, 11, 71, 372, 2850, 21121, 191077, 1793078, 19037624, 214051059, 2628723267, 34285658032, 479609321326, 7104125711717, 111655209047393, 1849927197690186, 32289686161489668 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,4

LINKS

Table of n, a(n) for n=1..20.

C. G. Bower, Transforms (2)

FORMULA

(A032032(n) + 1)/2.

CROSSREFS

Sequence in context: A006551 A274960 A151826 * A054234 A213328 A181275

Adjacent sequences:  A032107 A032108 A032109 * A032111 A032112 A032113

KEYWORD

nonn

AUTHOR

Christian G. Bower

STATUS

approved

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Last modified February 23 17:37 EST 2018. Contains 299584 sequences. (Running on oeis4.)