%I A107947
%S A107947 1,2,3,5,6,8,11,16,17,19,22,27,33,41,52,68,69,71,74,79,85,93,104,120,
%T A107947 137,156,178,205,238,279,331,399,400,402,405,410,416,424,435,451,468,
%U A107947 487,509,536,569,610,662,730,799,870,944,1023,1108,1201,1305,1425,1562
%N A107947 Partial sums of A107946.
%C A107947 Terms at positions 2^k is found in A107948.
%o A107947 (PARI) {a(n)=local(A=[1,1],B=[1]);for(i=1,#binary(n), B=concat(B,vector(#B,
               k,polcoeff(Ser(A)/(1-x),#B+k-1)));A=concat(A,B););B[n]}
%Y A107947 Cf. A107946, A107948.
%Y A107947 Sequence in context: A081830 A117517 A098491 this_sequence A120768 A002384 
               A096176
%Y A107947 Adjacent sequences: A107944 A107945 A107946 this_sequence A107948 A107949 
               A107950
%K A107947 nonn
%O A107947 0,2
%A A107947 Paul D. Hanna (pauldhanna(AT)juno.com), May 28 2005