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A008558 Repeatedly convert from decimal to octal!. 0
9, 11, 13, 15, 17, 21, 25, 31, 37, 45, 55, 67, 103, 147, 223, 337, 521, 1011, 1763, 3343, 6417, 14421, 34125, 102515, 310163, 1135623, 4252007, 20160547, 114720043, 665476453, 4752456545, 43321135541 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..32.

MATHEMATICA

NestList[FromDigits[IntegerDigits[#, 8]]&, 9, 40] (* Harvey P. Dale, Apr 09 2012 *)

CROSSREFS

Sequence in context: A070699 A065454 A248629 * A123760 A251394 A155877

Adjacent sequences:  A008555 A008556 A008557 * A008559 A008560 A008561

KEYWORD

nonn,base

AUTHOR

sbv(AT)VNET.IBM.COM (Scott Vetter), msvetter(AT)eng.xyplex.com (Mark Vetter)

STATUS

approved

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Last modified December 3 10:49 EST 2016. Contains 278699 sequences.