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%I #6 Dec 26 2023 00:26:21
%S 1,2,4,8,16,33,70,151,328,714,1556,3397,7436,16329,35974,79496,176160,
%T 391341,871338,1944079,4345700,9730886,21823468,49012777,110216952,
%U 248133169,559199786,1261385676,2847638456,6433380969,14543748302,32897642087,74452009504,168572269698,381831192836,865191342125
%N Second differences of A129983.
%K nonn
%O 0,2
%A _Paul Curtz_, Jun 14 2007
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