|
Search: id:A015528
|
|
|
| A015528 |
|
Linear 2nd order recurrence. |
|
+0
1
|
|
| 0, 1, 3, 19, 87, 451, 2223, 11179, 55767, 279091, 1394943, 6975739, 34876647, 174387331, 871928463, 4359658699, 21798260727, 108991369171, 544956714783, 2724783836059, 13623918656007, 68119594328611, 340597969545903
(list; graph; listen)
|
|
|
OFFSET
|
0,3
|
|
|
FORMULA
|
a(n) = 3 a(n-1) + 10 a(n-2).
a(n)=5^n/7-(-2)^n/7. Binomial transform is A015540. - Paul Barry (pbarry(AT)wit.ie), Feb 07 2004
|
|
PROGRAM
|
(Other) sage: [lucas_number1(n, 3, -10) for n in xrange(0, 23)]# [From Zerinvary Lajos (zerinvarylajos(AT)yahoo.com), Apr 22 2009]
|
|
CROSSREFS
|
Sequence in context: A163431 A167242 A089621 this_sequence A050863 A049153 A074361
Adjacent sequences: A015525 A015526 A015527 this_sequence A015529 A015530 A015531
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
Olivier Gerard (olivier.gerard(AT)gmail.com)
|
|
|
Search completed in 0.002 seconds
|
