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A063054
'Reverse and Add!' trajectory of 1997.
3
1997, 9988, 18887, 97768, 184547, 930028, 1750067, 9350638, 17711177, 94822948, 179745797, 977293768, 1844686547, 9301551028, 17503102067, 93523232638, 177146465177, 948711106948, 1798312224797, 9772534363768, 18446168716547
OFFSET
0,1
LINKS
Reinhard Zumkeller and Michael Lee, Table of n, a(n) for n = 0..2318 (terms 0 through 250 provided by Reinhard Zumkeller)
EXAMPLE
a(1) = 1997 + 7991 = 9988.
MATHEMATICA
NestList[ #+FromDigits[ Reverse[ IntegerDigits[ # ] ] ]&, 1997, 25 ]
PROG
(ARIBAS): m := 1997; stop := 25; c := 0; rev := int_reverse(m); while m <> rev and c < stop do inc(c); write(m, " "); m := m + rev; rev := int_reverse(m); end;
(Haskell)
a063054 n = a063054_list !! n
a063054_list = iterate a056964 1997 -- Reinhard Zumkeller, Sep 22 2011
KEYWORD
base,nonn
AUTHOR
Klaus Brockhaus, Jul 07 2001
STATUS
approved