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%I #12 Apr 16 2013 12:43:48
%S 0,0,0,1,0,2,2,3,1,5,7,10,11,14,23,33,44,54,81,114,158,212,287,407,
%T 565,777,1050,1471,2036,2813,3863,5310,7370,10183,14046,19296,26726,
%U 36909,50955,70251,96867,133886,184841,255092,351673
%N First differences of A219795.
%C 2,2,3, 5,7,10,11, 23,33,44, 81,114,158,212, 407,565,777, 1471,2036,2813,3863, 7370,10183,14046, 26726,36909,50955,70251, is a subsequence of A219795(n).
%C Consider A219795(n) and its successive differences:
%C 2, 2, 2, 2, 3, 3, 5, 7, 10, 11, 16, 23, 33, 44; A219795(n)
%C 0, 0, 0, 1, 0, 2, 2, 3, 1, 5, 7, 10, 11, 14; a(n)
%C 0, 0, 1, -1, 2, 0, 1, -2, 4, 2, 3, 1, 3, 9;
%C 0, 1, -2, 3, -2, 1, -3, 6, -2, 1, -2, 2, 6, 1;
%F a(n) = A219795(n+1) - A219795(n).
%p A219865 := proc(n)
%p A219795(n+1)-A219795(n) ;
%p end proc: # _R. J. Mathar_, Jan 06 2013
%K nonn,less
%O 0,6
%A _Paul Curtz_, Nov 30 2012