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URL: https://oeis.org/A277733

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A277733

Positions of 1's in A277731.

4

2, 4, 7, 9, 13, 15, 18, 20, 24, 26, 28, 31, 33, 37, 39, 42, 44, 48, 50, 52, 55, 57, 60, 62, 66, 68, 71, 73, 77, 79, 81, 84, 86, 90, 92, 95, 97, 101, 103, 105, 108, 110, 113, 115, 119, 121, 124, 126, 130, 132, 135, 137, 141, 143, 145, 148, 150, 154, 156, 159, 161, 165, 167, 169, 172, 174, 177, 179

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OFFSET

1,1

COMMENTS

{A277732, A277733, A277734} forms a three-way partition of the positive integers, similar to {A003144, A003145, A003146}.

LINKS

N. J. A. Sloane, Table of n, a(n) for n = 1..20000

MAPLE

MATHEMATICA

m = 1000; (* number of terms of A277731 *)

S[1] = {0};

S[n_] := S[n] = SubstitutionSystem[{0 -> {0, 1}, 1 -> {0, 1, 2}, 2 -> {0}}, S[n - 1]];

For[n = 2, True, n++, If[PadRight[S[n], m] == PadRight[S[n - 1], m], Print["n = ", n]; Break[]]];

A277731 = Take[S[n], m];

Position[A277731, 1] // Flatten (* Jean-François Alcover, Mar 20 2023 *)

CROSSREFS

Cf. A052980, A277731, A277732, A277734.

Cf. also A003144, A003145, A003146.

Sequence in context: A080057 A087158 A195669 * A288933 A129259 A077597

Adjacent sequences: A277730 A277731 A277732 * A277734 A277735 A277736

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Nov 07 2016

STATUS

approved