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%I #4 Jun 03 2019 19:47:46
%S 8,0,0,0,0,0,1,-7,28,-84,210,-462,925,-1729,3094,-5460,9828,-18564,
%T 37128,-77519,164710,-347984,719719,-1444170,2796248,-5200299,9230104,
%U -15459444,23888319,-32317194,32317194,0,-124040423,476768435,-1358719271,3407426841
%N First term of n-th difference sequence of (floor(3e*k)), k >= 0.
%H Clark Kimberling, <a href="/A325737/b325737.txt">Table of n, a(n) for n = 1..200</a>
%t Table[First[Differences[Table[Floor[3E*n], {n, 0, 50}], n]], {n, 1, 50}]
%Y Cf. A325664.
%K easy,sign
%O 1,1
%A _Clark Kimberling_, May 23 2019
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