A101105 Row sums of triangle A101224, which is related to the Flavius sieve (A000960).
1, 5, 18, 44, 90, 167, 257, 397, 596, 782, 1079, 1404, 1793, 2226, 2813, 3337, 4110, 4848, 5632, 6671, 7773, 8861, 10160, 11792, 13046, 14846, 16653, 18494, 20678, 22985, 25064, 27828, 30431, 33181, 36384, 39617, 42795, 46650, 50873, 54438
Offset: 1
Keywords
Crossrefs
Cf. A101224.
Programs
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PARI
{a(n)=local(A);sum(k=1,n,if(k==1,A=n^2-n+1,A=(n-k+1)*floor((A-1)/(n-k+1))))}