login
A101105
Row sums of triangle A101224, which is related to the Flavius sieve (A000960).
1
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
1,2
PROG
(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))))}
CROSSREFS
Cf. A101224.
Sequence in context: A273532 A160969 A213397 * A037140 A321049 A007237
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Dec 01 2004
STATUS
approved