OFFSET
0,3
COMMENTS
a(n)^k + reverse(a(n))^k is a palindrome for any positive integer k. - Bui Quang Tuan, Mar 31 2015
LINKS
FORMULA
a(n+1) = A011557(n).
a(n) = A178500(n) / 10.
a(n) = (10^n - 0^n)/10. E.g.f.: exp(5*x)*sinh(5x)/5. Binomial transform of A015577. - Paul Barry, Jul 09 2003
G.f.: x/(1 - 10*x). - Chai Wah Wu, Jun 17 2020
MATHEMATICA
Join[{0}, 10^Range[0, 19]] (* Alonso del Arte, Mar 31 2015 *)
PROG
(PARI) a(n)=10^n\10 \\ Charles R Greathouse IV, Oct 07 2015
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Reinhard Zumkeller, May 28 2010
STATUS
approved