A078232 a(1) = 2, a(n+1) = smallest multiple of a(n) using only prime digits (2,3,5,7).

2, 22, 352, 23232, 255552, 23255232, 232575575232, 22327255222272, 33575272735753772255232

Offset

1,1

Comments

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

Links

Table of n, a(n) for n=1..9.

Crossrefs

Cf. A078233, A078234, A078235, A078236.

Sequence in context: A245113 A363006 A363304 * A151615 A111985 A378743

Adjacent sequences: A078229 A078230 A078231 * A078233 A078234 A078235

Keyword

base,more,nonn

Author

Amarnath Murthy, Nov 23 2002

Extensions

More terms from Sascha Kurz, Jan 06 2003

Status

approved