



6, 56, 606, 6656, 73206, 805256, 8857806, 97435856, 1071794406, 11789738456, 129687123006, 1426558353056, 15692141883606, 172613560719656, 1898749167916206, 20886240847078256, 229748649317860806, 2527235142496468856
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OFFSET

0,1


LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..900
Index entries for linear recurrences with constant coefficients, signature (12,11).


FORMULA

a(n) = 11*a(n1)10.
a(n) = 12*a(n1)11*a(n2).
G.f.: 2*(38*x)/((1x)*(111*x)).


MATHEMATICA

5*11^Range[0, 20]+1 (* or *) LinearRecurrence[{12, 11}, {6, 56}, 20] (* Harvey P. Dale, May 20 2019 *)


PROG

(MAGMA) [5*11^n+1: n in [0..30]];


CROSSREFS

Sequence in context: A099140 A048348 A227384 * A025749 A297705 A231690
Adjacent sequences: A199752 A199753 A199754 * A199756 A199757 A199758


KEYWORD

nonn,easy


AUTHOR

Vincenzo Librandi, Nov 10 2011


STATUS

approved



