OFFSET
1,3
COMMENTS
See A191203.
LINKS
Ivan Neretin, Table of n, a(n) for n = 1..10000
EXAMPLE
1 -> 0,3 -> 4,8,9,27 ->
MATHEMATICA
g=12; Union[Flatten[NestList[{3#, Floor[(#^2)/2]}&, 1, g]]]
(* A191285; use g>11 to get all of first 60 terms *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, May 29 2011
STATUS
approved