OFFSET
0,2
COMMENTS
a(n) == 0 (mod 11)
LINKS
G. C. Greubel, Table of n, a(n) for n = 0..1000
FORMULA
When n has one digit a(n)=(11n)^2. When n has two digits a(n)= 110110*x^2 + 1014101*x*y + 110110*y^2. (Here x,y are the digits of n.). - _Keith Schneider_, Jun 16 2007
EXAMPLE
a(13) = 1331*3113 = 4143403.
MATHEMATICA
Table[FromDigits[Join[IntegerDigits[n], Reverse[IntegerDigits[n]]]]* FromDigits[Join[Reverse[IntegerDigits[n]], IntegerDigits[n]]], {n, 0, 50}] (* G. C. Greubel, sep 06 2017 *)
CROSSREFS
KEYWORD
base,easy,nonn
AUTHOR
Amarnath Murthy, Aug 09 2005
EXTENSIONS
More terms from Maire B. O'Neill (mbo5001(AT)psu.edu), Sep 18 2005
Corrected by James Greene (jmg482(AT)psu.edu), Apr 07 2006
STATUS
approved