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A275863 Floor(r*a(n-1)) + floor(r*a(n-2)), where r = 5/2, a(0) = 1, a(1) = 1. 4
1, 1, 4, 12, 40, 130, 425, 1387, 4529, 14789, 48294, 157707, 515002, 1681772, 5491935, 17934267, 58565504, 191249427, 624537327, 2039466884, 6660010527, 21748693527, 71021760134, 231926134152, 757369735715, 2473239674667, 8076523525954, 26374408001552 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Clark Kimberling, Table of n, a(n) for n = 0..1000

FORMULA

a(n) = floor(r*a(n-1)) + floor(r*a(n-2)), where r = 5/2, a(0) = 1, a(1) = 1.

MATHEMATICA

r = 5/2; a[0] = 1; a[1] = 1; z = 50;

a[n_] := a[n] = Floor[r*a[n - 1]] + Floor[r*a[n - 2]];

t = Table[a[n], {n, 0, z}]

CROSSREFS

Cf. A275862, A275864, A275865.

Sequence in context: A090576 A152174 A087206 * A289653 A081875 A102433

Adjacent sequences:  A275860 A275861 A275862 * A275864 A275865 A275866

KEYWORD

nonn,easy

AUTHOR

Clark Kimberling, Aug 12 2016

STATUS

approved

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Last modified September 28 16:40 EDT 2020. Contains 337393 sequences. (Running on oeis4.)