|
|
A015498
|
|
a(0)=1, a(1)=10, a(n) = sum_{k=0}^{k=n-1} 10^k a(k).
|
|
0
|
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
|
|
FORMULA
|
|
|
PROG
|
(Magma) I:=[1, 10, 101]; [n le 3 select I[n] else (10^(n-2)+1)*Self(n-1): n in [1..15]]; // Vincenzo Librandi, Nov 11 2012
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|