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A108761 Numbers of the form (10^i)*(13^j), with i, j >= 0. 10
1, 10, 13, 100, 130, 169, 1000, 1300, 1690, 2197, 10000, 13000, 16900, 21970, 28561, 100000, 130000, 169000, 219700, 285610, 371293, 1000000, 1300000, 1690000, 2197000, 2856100, 3712930, 4826809, 10000000, 13000000, 16900000 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,2

LINKS

Reinhard Zumkeller, Table of n, a(n) for n = 1..10000

PROG

(Haskell)

import Data.Set (singleton, deleteFindMin, insert)

a108761 n = a108761_list !! (n-1)

a108761_list = f $ singleton (1, 0, 0) where

   f s = y : f (insert (10 * y, i + 1, j) $ insert (13 * y, i, j + 1) s')

         where ((y, i, j), s') = deleteFindMin s

-- Reinhard Zumkeller, May 15 2015

CROSSREFS

Cf. A107326, A107364, A107462, A107466, A107710, A108056, A107764, A108748, A108090.

Sequence in context: A219715 A154142 A219804 * A219455 A164766 A075828

Adjacent sequences:  A108758 A108759 A108760 * A108762 A108763 A108764

KEYWORD

nonn

AUTHOR

Douglas Winston (douglas.winston(AT)srupc.com), Jun 24 2005

STATUS

approved

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Last modified May 19 10:55 EDT 2019. Contains 323390 sequences. (Running on oeis4.)