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 A179482 A subset of vampire numbers: n has a nontrivial factorization using n's digits in reverse order 3
 126, 153, 688, 1395, 33579, 37668, 187029, 223524, 267034, 1008126, 1480368, 1514955, 1574253, 1766196, 1791495, 1831086, 1945944, 2784384, 10013323, 10353244, 18937617, 19437888, 23486976, 36528975, 38477586, 45334998, 48471696, 109019911, 116257833 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A subset of A020342. Easy to prove that no vampire number has a factorization with n's digits in "normal" (left-to-right) order, so it was natural to search if any of the reverse order works. A superset of A009944,permitting two or more(!) factors. [Adam Kertesz, Aug 07 2010] Sequence is infinite, since it is a superset of A009944 which is infinite (see Comments at A009944). - Giovanni Resta, Mar 17 2013 LINKS Giovanni Resta, Table of n, a(n) for n = 1..155 Giovanni Resta, Decompositions of the first 155 terms EXAMPLE E.g. 126=6*21, 1395=5*9*31, 267034=4307*62. CROSSREFS Cf. A020342, A009944. Sequence in context: A025389 A025380 A020342 * A009944 A203566 A320292 Adjacent sequences: A179479 A179480 A179481 * A179483 A179484 A179485 KEYWORD nonn,base AUTHOR Adam Kertesz, Jul 16 2010 EXTENSIONS a(10)-a(29) from Giovanni Resta, Mar 17 2013 STATUS approved

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Last modified August 9 11:12 EDT 2024. Contains 375040 sequences. (Running on oeis4.)