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A131367 Smallest number that can be written in exactly n ways as a sum of distinct repdigits of its decimal digits. 2
10, 1, 197, 1198, 1098, 1236, 1235, 1492, 1384, 1576, 1976, 4713, 1347, 7514, 3712, 7641, 8716, 11967, 5614, 12377, 3912, 12337, 10978, 3821, 3812, 14367, 15946, 12983, 10879, 12798, 14695, 13429, 13822, 13821, 13820, 12439, 13697, 16879, 12698, 13946, 13694 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

COMMENTS

A131364(a(n)) = n and A131364(m) <> n for m<a(n).

LINKS

Lars Blomberg, Table of n, a(n) for n = 0..2000

Eric Weisstein's World of Mathematics, Repdigit

EXAMPLE

a(2)=197: A131364(197)=#{111+77+9,99+77+11+9+1}=2;

a(3)=1298:

A131364(1298)=#{1111+99+88,999+111+99+88+1,888+222+99+88+1}=3.

CROSSREFS

Sequence in context: A049223 A308282 A223512 * A048176 A127616 A191549

Adjacent sequences:  A131364 A131365 A131366 * A131368 A131369 A131370

KEYWORD

nonn,base

AUTHOR

Reinhard Zumkeller, Jul 03 2007

EXTENSIONS

a(25)-a(40) from Lars Blomberg, May 11 2015

STATUS

approved

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Last modified September 24 01:27 EDT 2021. Contains 347617 sequences. (Running on oeis4.)