|
Search: id:A015611
|
|
|
| A015611 |
|
a(n) = 12 a(n-1) + 7 a(n-2). |
|
+0
1
|
|
| 0, 1, 12, 151, 1896, 23809, 298980, 3754423, 47145936, 592032193, 7434407868, 93357119767, 1172326292280, 14721415345729, 184863268194708, 2321409125756599, 29150952386442144, 366061292517601921
(list; graph; listen)
|
|
|
OFFSET
|
0,3
|
|
|
FORMULA
|
a(n)=(1/86)*sqrt(43)*{[6+sqrt(43)]^n-[6-sqrt(43)]^n}, with n>=0 [From Paolo P. Lava (ppl(AT)spl.at), Jan 13 2009]
|
|
PROGRAM
|
(Other) sage: [lucas_number1(n, 12, -7) for n in xrange(0, 18)]# [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 29 2009]
|
|
CROSSREFS
|
Sequence in context: A053507 A060917 A113358 this_sequence A127650 A103759 A121195
Adjacent sequences: A015608 A015609 A015610 this_sequence A015612 A015613 A015614
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
Olivier Gerard (olivier.gerard(AT)gmail.com)
|
|
|
Search completed in 0.002 seconds
|
