|
|
|
|
161, 323, 485, 647, 809, 971, 1133, 1295, 1457, 1619, 1781, 1943, 2105, 2267, 2429, 2591, 2753, 2915, 3077, 3239, 3401, 3563, 3725, 3887, 4049, 4211, 4373, 4535, 4697, 4859, 5021, 5183, 5345, 5507, 5669, 5831, 5993, 6155, 6317, 6479, 6641, 6803, 6965
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
The identity (162*n-1)^2-(81*n^2-n)*(18)^2=1 can be written as a(n)^2-A157953(n)*(16)^2=1. - Vincenzo Librandi, Jan 29 2012
|
|
LINKS
|
|
|
FORMULA
|
|
|
MAPLE
|
|
|
MATHEMATICA
|
|
|
PROG
|
(Magma) I:=[161, 323]; [n le 2 select I[n] else 2*Self(n-1)-Self(n-2): n in [1..50]]; // Vincenzo Librandi, Jan 29 2012
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|