OFFSET
1,1
COMMENTS
Odd subsequence of A046328 Palindromes with exactly 2 prime factors (counted with multiplicity). - Zak Seidov, Feb 20 2011
LINKS
Zak Seidov, Table of n, a(n) for n = 1..2000
EXAMPLE
9=3^2, 33=3*11 and 55=5*11 are palindromic, odd and are products of exactly 2 prime factors.
MAPLE
test := proc(n) local d; d := convert(n, base, 10); return ListTools[Reverse](d)=d and numtheory[bigomega](n)=2; end; a := []; for n from 1 to 14000 by 2 do if test(n) then a := [op(a), n]; end; od; a;
CROSSREFS
KEYWORD
nonn,base
AUTHOR
Jani Melik, Oct 13 2002
EXTENSIONS
Edited by Dean Hickerson, Oct 21 2002
STATUS
approved