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A023776 Metadromes: digits in base 7 are in strict ascending order. 0
0, 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 17, 18, 19, 20, 25, 26, 27, 33, 34, 41, 66, 67, 68, 69, 74, 75, 76, 82, 83, 90, 123, 124, 125, 131, 132, 139, 180, 181, 188, 237, 466, 467, 468, 474, 475, 482, 523, 524, 531, 580, 866, 867, 874, 923, 1266, 3267, 3268 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..59.

MATHEMATICA

Union[Flatten[FromDigits[#, 7]&/@Select[Permutations[Range[0, 6], 6], Min[ Differences[#]]>0&]]] (* Harvey P. Dale, Jul 25 2013 *)

CROSSREFS

Sequence in context: A047305 A032878 A032845 * A063037 A286262 A201992

Adjacent sequences:  A023773 A023774 A023775 * A023777 A023778 A023779

KEYWORD

nonn,base,fini,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified April 23 08:47 EDT 2019. Contains 322381 sequences. (Running on oeis4.)