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A031055 Write n in base 8, then complement each digit (d -> 7-d) and juxtapose. 1
6, 5, 4, 3, 2, 1, 0, 6, 7, 6, 6, 6, 5, 6, 4, 6, 3, 6, 2, 6, 1, 6, 0, 5, 7, 5, 6, 5, 5, 5, 4, 5, 3, 5, 2, 5, 1, 5, 0, 4, 7, 4, 6, 4, 5, 4, 4, 4, 3, 4, 2, 4, 1, 4, 0, 3, 7, 3, 6, 3, 5, 3, 4, 3, 3, 3, 2, 3, 1, 3, 0, 2, 7, 2, 6, 2, 5, 2, 4, 2, 3, 2, 2, 2, 1, 2, 0, 1, 7, 1 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..90.

MATHEMATICA

7 - Flatten[ IntegerDigits[ Range@ 50, 8]] (* Robert G. Wilson v, Jul 01 2014 *)

CROSSREFS

Sequence in context: A022962 A023448 A307337 * A249347 A284805 A225660

Adjacent sequences:  A031052 A031053 A031054 * A031056 A031057 A031058

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 26 16:52 EDT 2020. Contains 334627 sequences. (Running on oeis4.)