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Row sums of triangle A101224, which is related to the Flavius sieve (A000960).
1

%I #7 Jun 23 2020 19:05:13

%S 1,5,18,44,90,167,257,397,596,782,1079,1404,1793,2226,2813,3337,4110,

%T 4848,5632,6671,7773,8861,10160,11792,13046,14846,16653,18494,20678,

%U 22985,25064,27828,30431,33181,36384,39617,42795,46650,50873,54438

%N Row sums of triangle A101224, which is related to the Flavius sieve (A000960).

%H <a href="/index/J#Josephus">Index entries for sequences related to the Josephus Problem</a>

%o (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))))}

%Y Cf. A101224.

%K nonn

%O 1,2

%A _Paul D. Hanna_, Dec 01 2004