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A120878 a(n) = sum of first n terms of sequence A120877. 1

%I #6 Apr 09 2014 10:15:18

%S 1,2,4,7,9,12,18,25,27,31,33,37,39,43,45,49,52,64,76,88,100,112,125,

%T 127,129,134,144,167,169,172,187,189,196,214,226,238,252,284,300,331,

%U 333,339,345,354,374,387,394,407,409,411,417,423,430,447,453,459,467,469

%N a(n) = sum of first n terms of sequence A120877.

%o (PARI) {m=60;v=[1];for(n=2,m,a=0;q=sum(i=1,n-1,v[i]);for(j=1,n-1,if(q%v[j]==0,a++));print1(q,",");v=concat(v,a))} - (Klaus Brockhaus, Aug 16 2006)

%Y Cf. A120877.

%K nonn

%O 1,2

%A _Leroy Quet_, Jul 10 2006

%E More terms from _Klaus Brockhaus_, Aug 16 2006

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Last modified April 25 08:27 EDT 2024. Contains 371964 sequences. (Running on oeis4.)