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A037404 Every base 7 digit of n is a base 10 digit of n. 4
1, 2, 3, 4, 5, 6, 23, 46, 214, 250, 265, 285, 316, 421, 702, 1030, 1032, 1036, 1037, 1039, 1053, 1234, 1243, 1336, 1366, 1368, 1400, 1401, 1402, 1403, 1404, 1405, 1406, 1429, 1431, 1432, 1443, 1450, 1453, 1454, 1457, 1464 (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.List ((\\), nub)

a037404 n = a037404_list !! (n-1)

a037404_list = filter f [1..] where

   f x = null $ nub (ds 7 x) \\ nub (ds 10 x)

   ds b x = if x > 0 then d : ds b x' else []  where (x', d) = divMod x b

-- Reinhard Zumkeller, May 30 2013

CROSSREFS

Cf. A037402, A037403.

Sequence in context: A208450 A037333 A183529 * A037440 A262434 A246908

Adjacent sequences:  A037401 A037402 A037403 * A037405 A037406 A037407

KEYWORD

nonn,base

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified July 23 22:18 EDT 2019. Contains 325269 sequences. (Running on oeis4.)