A225796 a(1) = 1, a(n) = least proper multiple of a(n-1) which is a concatenation of two or more successive numbers.

1, 12, 456, 415416, 194191194192, 3816727961538167279616, 35270249819024056401913527024981902405640192

Offset: 1

Author

Paul Tek, Jul 27 2013

Keywords

• nonn
• base

Examples

			12 is the least proper multiple of 1 in A035333, hence a(2)=12.
456 is the least proper multiple of 12 in A035333, hence a(3)=456.
		

Links

• Paul Tek, Table of n, a(n) for n = 1..11
• Paul Tek, PARI program for this sequence

Crossrefs

Cf. A035333, A094333.

Programs

PARI

See Links section.