|
%I #10 May 22 2016 05:10:40
%S 126,153,688,1395,33579,37668,187029,223524,267034,1008126,1480368,
%T 1514955,1574253,1766196,1791495,1831086,1945944,2784384,10013323,
%U 10353244,18937617,19437888,23486976,36528975,38477586,45334998,48471696,109019911,116257833
%N A subset of vampire numbers: n has a nontrivial factorization using n's digits in reverse order
%C A subset of A020342.
%C 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.
%C A superset of A009944,permitting two or more(!) factors. [_Adam Kertesz_, Aug 07 2010]
%C Sequence is infinite, since it is a superset of A009944 which is infinite (see Comments at A009944). - _Giovanni Resta_, Mar 17 2013
%H Giovanni Resta, <a href="/A179482/b179482.txt">Table of n, a(n) for n = 1..155</a>
%H Giovanni Resta, <a href="/A179482/a179482.txt">Decompositions of the first 155 terms</a>
%e E.g. 126=6*21, 1395=5*9*31, 267034=4307*62.
%Y Cf. A020342, A009944.
%K nonn,base
%O 1,1
%A _Adam Kertesz_, Jul 16 2010
%E a(10)-a(29) from _Giovanni Resta_, Mar 17 2013
|
