|
%I #17 Aug 08 2021 16:24:15
%S 8,8,888,8,80,888,8008,8,888888888,80,88,888,8008,8008,8880,80,88808,
%T 888888888,88008,80,80808,88,880808,888,800,8008,8808888888,8008,
%U 8808808,8880,888088,800,888888,88808,80080,888888888,888,88008,80808,80,88888,80808
%N Smallest multiple of n using only digits 0 and 8.
%C a(n) = min{A204095(k): k > 0 and A204095(k) mod n = 0}. [_Reinhard Zumkeller_, Jan 10 2012]
%H Reinhard Zumkeller, <a href="/A078247/b078247.txt">Table of n, a(n) for n = 1..998</a>
%o (Haskell)
%o a078247 n = head [x | x <- tail a204095_list, mod x n == 0]
%o -- _Reinhard Zumkeller_, Jan 10 2012
%o (Python)
%o def a(n):
%o k = 1
%o while 8*int(bin(k)[2:])%n: k += 1
%o return 8*int(bin(k)[2:])
%o print([a(n) for n in range(1, 43)]) # _Michael S. Branicky_, Aug 08 2021
%Y Cf. A004290, A078241-A078248, A079339, A096681-A096688.
%K base,nonn
%O 1,1
%A _Amarnath Murthy_, Nov 23 2002
%E More terms from _Ray Chandler_, Jul 12 2004
|
