0,3
a(n) = 9^(n-1) a(n-1) + a(n-2).
Sequence in context: A053854 A053764 A122251 this_sequence A145183 A124417 A159356
Adjacent sequences: A015478 A015479 A015480 this_sequence A015482 A015483 A015484
nonn,easy
Olivier Gerard (olivier.gerard(AT)gmail.com)
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