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A036779 Greedy sequence such that no term is the average of three others. 0
0, 1, 2, 3, 4, 12, 13, 14, 15, 16, 48, 49, 50, 51, 52, 60, 61, 62, 63, 64, 192, 193, 194, 195, 196, 204, 205, 206, 207, 208, 240, 241, 242, 243, 244, 252, 253, 254, 255, 256, 768, 769, 770, 771, 772, 780, 781, 782, 783, 784, 816, 817, 818, 819, 820, 828, 829 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

REFERENCES

Related to R. K. Guy, Unsolved Problems Number Theory, C16.

LINKS

Table of n, a(n) for n=1..57.

J. W. Layman, Some Properties of a Certain Nonaveraging Sequence, J. Integer Sequences, Vol. 2, 1999, #4.

A. M. Odlyzko and R. P. Stanley, Some curious sequences constructed with the greedy algorithm, 1978

MATHEMATICA

Flatten[Outer[Plus, 4 FromDigits[#, 4] & /@ Tuples[{0, 3}, 5], Range[0, 4]]] (* Birkas Gyorgy, May 27 2011 *)

CROSSREFS

Sequence in context: A013620 A317498 A119799 * A037339 A285618 A062946

Adjacent sequences:  A036776 A036777 A036778 * A036780 A036781 A036782

KEYWORD

nonn

AUTHOR

John W. Layman

STATUS

approved

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Last modified September 25 07:33 EDT 2020. Contains 337335 sequences. (Running on oeis4.)