A037392 Every base 4 digit of n is a base 10 digit of n.

1, 2, 3, 13, 21, 31, 42, 63, 102, 123, 203, 213, 231, 234, 235, 238, 239, 341, 351, 381, 421, 520, 682, 1013, 1023, 1024, 1025, 1026, 1028, 1029, 1031, 1032, 1036, 1037, 1039, 1040, 1041, 1042, 1043, 1044, 1045, 1053, 1062

Offset: 1

Author

Clark Kimberling

Keywords

• nonn
• base

Links

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

Crossrefs

Cf. A037387, A037388, A037389, A037390, A037391.

Programs

Haskell

import Data.List ((\\), nub)
a037392 n = a037392_list !! (n-1)
a037392_list = filter f [1..] where
   f x = null $ nub (ds 4 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