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 A069811 a(n)=sum(k=1,n,omega(k)^2). 1
 0, 1, 2, 3, 4, 8, 9, 10, 11, 15, 16, 20, 21, 25, 29, 30, 31, 35, 36, 40, 44, 48, 49, 53, 54, 58, 59, 63, 64, 73, 74, 75, 79, 83, 87, 91, 92, 96, 100, 104, 105, 114, 115, 119, 123, 127, 128, 132, 133, 137, 141, 145, 146, 150, 154, 158, 162, 166, 167, 176, 177, 181 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,3 REFERENCES Hardy and Wright,"An introduction to the theory of numbers", Fifth edition, Oxford university press, Chap.XXII, p. 357 LINKS FORMULA a(n)=sum(k=1, n, A001221(k)^2); a(n)=n*Log(Log(n))^2+O(n*Log(log(n))) CROSSREFS Equals (A074787(n)-1)/4. Sequence in context: A061887 A005455 A047338 * A004826 A132115 A184810 Adjacent sequences:  A069808 A069809 A069810 * A069812 A069813 A069814 KEYWORD easy,nonn AUTHOR Benoit Cloitre, Apr 30 2002 STATUS approved

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