|
|
A164827
|
|
Generalized Lucas numbers: a(n) = a(n-1) + 10*a(n-2); with a(1)=2 a(2)=1
|
|
0
|
|
|
2, 1, 21, 31, 241, 551, 2961, 8471, 38081, 122791, 503601, 1731511, 6767521, 24082631, 91757841, 332584151, 1250162561, 4576004071, 17077629681, 62837670391, 233613967201, 861990671111, 3198130343121, 11818037054231
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
FORMULA
|
a(n) = a(n-1) + 10*a(n-2); a(1)=2, a(2)=1. - Harvey P. Dale, Apr 07 2015
|
|
MATHEMATICA
|
LinearRecurrence[{1, 10}, {2, 1}, 30] (* Harvey P. Dale, Apr 07 2015 *)
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|