OFFSET
1,2
COMMENTS
MATHEMATICA
t = Nest[Flatten[# /. {1 -> {1, 0}, 0 -> {0, 1}}] &, {1}, 8]; t
seqA = Table[Sum[t[[k]], {k, 1, n}], {n, 1, 256}] (* A159481 *)
seqB = Table[n, {n, 1, 220}]; (* A000027 *)
jointRank[{seqA_,
seqB_}] := {Flatten@Position[#1, {_, 1}],
Flatten@Position[#1, {_, 2}]} &[
Sort@Flatten[{{#1, 1} & /@ seqA, {#1, 2} & /@ seqB}, 1]];
limseqU =
FixedPoint[jointRank[{seqA, #1[[1]]}] &, jointRank[{seqA, seqB}]][[
1]] (* A187897 *)
Complement[Range[Length[seqA]], limseqU] (* A187898 *)
(* by Peter J. C. Moses, Mar 15 2011 *)
CROSSREFS
KEYWORD
nonn
AUTHOR
Clark Kimberling, Mar 15 2011
STATUS
approved