A156069 a(n) = A156071(n)/n.

3, 19, 127, 954, 7633, 63609, 545221, 4770684, 42406081

Offset

1,1

Links

Table of n, a(n) for n=1..9.

Blaine, How about a math puzzle?

Albert Franck, Puzzles, see item 7.

Crossrefs

Cf. A156071, A163574.

Sequence in context: A157455 A027308 A295371 * A058860 A074568 A219053

Adjacent sequences: A156066 A156067 A156068 * A156070 A156071 A156072

Keyword

nonn,base,fini,full

Author

Alexander R. Povolotsky, Sep 25 2009

Extensions

New name from Michel Marcus, Dec 01 2013

Status

approved