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A325600 Positions of 1 in A325599. 5
1, 2, 3, 5, 7, 9, 10, 11, 13, 14, 16, 17, 18, 20, 21, 23, 24, 25, 27, 28, 30, 32, 34, 35, 36, 38, 39, 41, 43, 44, 45, 47, 48, 50, 52, 54, 55, 56, 58, 59, 61, 63, 64, 65, 67, 68, 70, 72, 74, 75, 76, 78, 79, 81, 83, 84, 85, 87, 88, 90, 91, 92, 94, 95, 97, 98 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

COMMENTS

All the terms of A325599 are in {1,2}, so that A325600 and A325601 are a complementary pair.

LINKS

Clark Kimberling, Table of n, a(n) for n = 1..10000

MATHEMATICA

mex[list_, start_] := (NestWhile[# + 1 &, start, MemberQ[list, #] &]); a = {1}; Do[AppendTo[a, mex[Rest[2 a] + Most[a], Last[a] + 1]], {60}]; a (* A325597 *)

c = Complement[Range[Last[a]], a] (* A325598 *)

da = Differences[a] (* A325599 *)

Flatten[Position[da, 1]] (* A325600 *)

Flatten[Position[da, 2]] (* A325601) *)

(* Peter J. C. Moses, May 07 2019 *)

CROSSREFS

Cf. A325597, A325599, A325601.

Sequence in context: A304721 A063464 A341518 * A195921 A175089 A047489

Adjacent sequences: A325597 A325598 A325599 * A325601 A325602 A325603

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, May 11 2019

STATUS

approved

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Last modified December 4 10:32 EST 2022. Contains 358556 sequences. (Running on oeis4.)