OFFSET
0,1
COMMENTS
Normally one stops as soon as a palindrome is reached.
A Reverse and Add! sequence.
LINKS
Alois P. Heinz, Table of n, a(n) for n = 0..1000 (first 251 terms from Reinhard Zumkeller)
MAPLE
a:= proc(n) option remember; `if`(n=0, 3, (h-> h+ (s->
parse(cat(s[-i]$i=1..length(s))))(""||h))(a(n-1)))
end:
seq(a(n), n=0..40); # Alois P. Heinz, Jun 18 2014
MATHEMATICA
NestList[ # + FromDigits@Reverse@IntegerDigits@# &, 3, 29] (* Robert G. Wilson v, Dec 16 2005 *)
PROG
(Haskell)
a033648 n = a033648_list !! n
a033648_list = iterate a056964 3 -- Reinhard Zumkeller, Sep 22 2011
CROSSREFS
KEYWORD
nonn,base
AUTHOR
STATUS
approved