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A199752
3*11^n+1
1
4, 34, 364, 3994, 43924, 483154, 5314684, 58461514, 643076644, 7073843074, 77812273804, 855935011834, 9415285130164, 103568136431794, 1139249500749724, 12531744508246954, 137849189590716484, 1516341085497881314
OFFSET
0,1
FORMULA
a(n) = 11*a(n-1)-10.
a(n) = 12*a(n-1)-11*a(n-2).
G.f.: 2*(2-7*x)/((1-x)*(1-11*x)).
MATHEMATICA
LinearRecurrence[{12, -11}, {4, 34}, 30] (* or *) NestList[11#-10&, 4 , 30] (* Harvey P. Dale, May 09 2013 *)
PROG
(Magma) [3*11^n+1: n in [0..30]];
CROSSREFS
Sequence in context: A107350 A206180 A274344 * A264607 A307941 A084973
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Nov 10 2011
STATUS
approved