login
A325519
Difference sequence of A325426.
3
2, 2, 1, 3, 2, 1, 3, 2, 3, 1, 3, 3, 2, 4, 2, 2, 1, 1, 3, 3, 2, 1, 3, 2, 1, 3, 3, 1, 1, 1, 2, 1, 3, 4, 1, 1, 3, 3, 2, 1, 3, 2, 4, 3, 3, 2, 1, 3, 2, 1, 3, 2, 1, 2, 1, 2, 1, 3, 5, 1, 3, 3, 2, 1, 3, 2, 2, 1, 1, 3, 3, 2, 1, 3, 2, 3, 1, 3, 3, 2, 4, 4, 1, 1, 2, 1
OFFSET
1,1
COMMENTS
See A325417 for a guide to related sequences. Conjecture: every term is in {1,2,3,4,5,6,7}.
LINKS
MATHEMATICA
a = {1}; Do[AppendTo[a, NestWhile[# + 1 &, Last[a] + 1, Apply[Or,
Map[MemberQ[a, #] &, Select[Flatten[{#/2,
If[Mod[#, 3] == 0, (2 #)/3, 0] + If[Mod[#, 3] == 1, 1/3 (1 + 2 #), 0]}],
IntegerQ || # == 0]]] &]], {200}]; a ; (* A325425 *)
c = Complement[Range[Last[a]], a] ; (* A325426 *)
Differences[a] (* A325518 *)
Differences[c] (* A325519 *)
(* Peter J. C. Moses, Apr 23 2019 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Clark Kimberling, May 06 2019
STATUS
approved