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A111298 Add the digits of the first number to give the second; the first number multiplied by the second gives the third. The third number becomes the first in a new "set" of three. 0
15, 6, 90, 9, 810, 9, 7290, 18, 131220, 9, 1180980, 27, 31886460, 36, 1147912560, 36, 41324852160, 36, 1487694677760, 72, 107114016798720, 54, 5784156907130880, 72, 416459297313423360, 72, 29985069406566481920, 99, 2968521871250081710080 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Table of n, a(n) for n=0..28.

CROSSREFS

Sequence in context: A116907 A277384 A040214 * A241440 A040213 A097532

Adjacent sequences:  A111295 A111296 A111297 * A111299 A111300 A111301

KEYWORD

nonn,base

AUTHOR

Chris Dawson (chris(AT)irjsoftware.com), based on an email from Graham Rees, Nov 02 2005

EXTENSIONS

More terms from R. J. Mathar, Feb 08 2008

STATUS

approved

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Last modified November 15 08:37 EST 2019. Contains 329144 sequences. (Running on oeis4.)