OFFSET
1,2
LINKS
Reinhard Zumkeller, Table of n, a(n) for n = 1..10000
MATHEMATICA
mtchQ[n_]:=Module[{b7=Union[IntegerDigits[n, 7]], b2=Union[IntegerDigits[n, 2]]}, MemberQ[Partition[b7, Length[b2], 1], b2]]
Select[Range[400], mtchQ] (* Harvey P. Dale, Feb 20 2011 *)
PROG
(Haskell)
import Data.List ((\\), nub)
a037376 n = a037376_list !! (n-1)
a037376_list = filter f [1..] where
f x = null $ nub (ds 2 x) \\ nub (ds 7 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
KEYWORD
nonn,base
AUTHOR
STATUS
approved