login
a(1) = 4, a(n+1) = smallest multiple of a(n) using only composite digits (4,6,8,9,0) and which is not divisible by 10.
6

%I #9 Dec 05 2013 19:55:57

%S 4,8,48,96,864,6048,489888,460984608,4880444044896,

%T 6604089990008099904,6406898466996448048966464,

%U 488494490499084904898890846098449664

%N a(1) = 4, a(n+1) = smallest multiple of a(n) using only composite digits (4,6,8,9,0) and which is not divisible by 10.

%C Sequence is infinite - see Comments in A078233. - Fung Cheok Yin (cheokyin_restart(AT)yahoo.com.hk), Sep 02 2006

%Y Cf. A078237, A078238.

%K base,nonn

%O 1,1

%A _Amarnath Murthy_, Nov 23 2002

%E More terms from _Sascha Kurz_, Jan 03 2003

%E More terms from _Sascha Kurz_, Jan 06 2003

%E a(12) from _Donovan Johnson_, Sep 05 2008