A275863 - OEIS

%I #8 Aug 12 2016 22:29:53

%S 1,1,4,12,40,130,425,1387,4529,14789,48294,157707,515002,1681772,

%T 5491935,17934267,58565504,191249427,624537327,2039466884,6660010527,

%U 21748693527,71021760134,231926134152,757369735715,2473239674667,8076523525954,26374408001552

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

%H Clark Kimberling, <a href="/A275863/b275863.txt">Table of n, a(n) for n = 0..1000</a>

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

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

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

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

%Y Cf. A275862, A275864, A275865.

%K nonn,easy

%O 0,3

%A _Clark Kimberling_, Aug 12 2016