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 A225796 a(1) = 1, a(n) = least proper multiple of a(n-1) which is a concatenation of two or more successive numbers. 2
 1, 12, 456, 415416, 194191194192, 3816727961538167279616, 35270249819024056401913527024981902405640192 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS Paul Tek, Table of n, a(n) for n = 1..11 Paul Tek, PARI program for this sequence EXAMPLE 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. PROG (PARI) See Links section. CROSSREFS Cf. A035333, A094333. Sequence in context: A239365 A277262 A226358 * A112363 A221032 A221496 Adjacent sequences:  A225793 A225794 A225795 * A225797 A225798 A225799 KEYWORD nonn,base AUTHOR Paul Tek, Jul 27 2013 STATUS approved

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Last modified January 23 06:15 EST 2019. Contains 319374 sequences. (Running on oeis4.)