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%I #8 Jul 21 2021 13:42:12
%S 2,3,4,5,6,9,12,15,18,27,36,45,54,81,108,135,162,243,324,405,486,729,
%T 972,1215,1458,2187,2916,3645,4374,6561,8748,10935,13122,19683,26244,
%U 32805,39366,59049,78732,98415,118098,177147,236196,295245,354294
%N Partial sums of the sequence that starts with 2 and is followed by A111575.
%F a(4n) = 2*A111575(4n). a(4n+1)= 3*A111575(4n+1). a(4n+2)= 4*A111575(4n+2). a(4n+3)= 5*A111575(4n+3). - _R. J. Mathar_, Jan 12 2008
%p A111575 := proc(n) 3^(floor(n/4)) ; end: A133463 := proc(n) 2+add( A111575(i),i=0..n-1) ; end: seq(A133463(n),n=0..80) ; # _R. J. Mathar_, Jan 12 2008
%t Accumulate[Join[{2},With[{pt=3^Range[0,15]},Sort[Join[pt,pt,pt,pt]]]]] (* _Harvey P. Dale_, Jul 21 2021 *)
%K nonn
%O 0,1
%A _Paul Curtz_, Nov 28 2007
%E Edited and extended by _R. J. Mathar_, Jan 12 2008