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A015474 q-Fibonacci numbers for q=3. 5
0, 1, 3, 28, 759, 61507, 14946960, 10896395347, 23830431570849, 156351472432735636, 3077466055723967094237, 181721293280796005380336249, 32191381943890636020834392595840, 17107820211824904790829046440906141689 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..60

FORMULA

a(n) = 3^(n-1) a(n-1) + a(n-2).

MATHEMATICA

RecurrenceTable[{a[0]==0, a[1]==1, a[n]==a[n-1]*3^(n-1) + a[n-2]},  a, {n, 20}] (* Vincenzo Librandi, Nov 09 2012 *)

CROSSREFS

Sequence in context: A084880 A110259 A276745 * A324462 A053601 A140990

Adjacent sequences:  A015471 A015472 A015473 * A015475 A015476 A015477

KEYWORD

nonn,easy

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified August 18 00:56 EDT 2019. Contains 326059 sequences. (Running on oeis4.)