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A005913 a(n) = [ tau*a(n-1) ] + [ tau*a(n-2) ]. 1
1, 3, 5, 12, 27, 62, 143, 331, 766, 1774, 4109, 9518, 22048, 51074, 118313, 274073, 634893, 1470737, 3406980, 7892311, 18282636, 42351953, 98108825, 227270312, 526474502, 1219584727, 2825183178 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Harvey P. Dale, Table of n, a(n) for n = 0..1000

MATHEMATICA

nxt[{a_, b_}]:={b, Floor[b*GoldenRatio]+Floor[a*GoldenRatio]}; NestList[nxt, {1, 3}, 30][[All, 1]] (* Harvey P. Dale, Jul 03 2019 *)

CROSSREFS

Sequence in context: A161762 A245649 A291035 * A056690 A317580 A066951

Adjacent sequences:  A005910 A005911 A005912 * A005914 A005915 A005916

KEYWORD

nonn

AUTHOR

N. J. A. Sloane.

STATUS

approved

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Last modified February 22 11:50 EST 2020. Contains 332135 sequences. (Running on oeis4.)