A023776 Metadromes: digits in base 7 are in strict ascending order.

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, 3275, 3324, 3667, 6068, 22875

Offset

1,3

Links

Table of n, a(n) for n=1..64.

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 A330029

Adjacent sequences: A023773 A023774 A023775 * A023777 A023778 A023779

Keyword

nonn,base,fini,full,easy

Author

Olivier Gérard

Extensions

More terms from Sean A. Irvine, Jun 10 2019

Status

approved