0,4
a(n) = a(n-1) + 7^(n-2) a(n-2).
Adjacent sequences: A015461 A015462 A015463 this_sequence A015465 A015466 A015467
Sequence in context: A022038 A015453 A002402 this_sequence A026948 A111585 A055839
nonn,easy
Olivier Gerard (olivier.gerard(AT)gmail.com)
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