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 A046669 Partial sums of A020639. 5
 1, 3, 6, 8, 13, 15, 22, 24, 27, 29, 40, 42, 55, 57, 60, 62, 79, 81, 100, 102, 105, 107, 130, 132, 137, 139, 142, 144, 173, 175, 206, 208, 211, 213, 218, 220, 257, 259, 262, 264, 305, 307, 350, 352, 355, 357, 404, 406, 413, 415, 418, 420, 473 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 REFERENCES D. S. Mitrinovic et al., Handbook of Number Theory, Kluwer, Section IV.1. LINKS T. D. Noe, Table of n, a(n) for n = 1..1000 A. E. Brouwer, Two number theoretic sums, Stichting Mathematisch Centrum. Zuivere Wiskunde, Report ZW 19/74 (1974): 3 pages. [Cached copy, included with the permission of the author] MATHEMATICA Accumulate[Array[FactorInteger[#][[1, 1]]&, 60]]  (* Harvey P. Dale, Apr 20 2011 *) PROG (Haskell) a046669 n = a046669_list !! (n-1) A046669_list = scanl1 (+) a020639_list -- Reinhard Zumkeller, Jun 15 2013 CROSSREFS A088821(n) + 1. Cf. A046670. Cf. A072486. Sequence in context: A084578 A190493 A070881 * A046670 A131383 A219730 Adjacent sequences:  A046666 A046667 A046668 * A046670 A046671 A046672 KEYWORD nonn,nice,easy AUTHOR STATUS approved

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Last modified May 29 10:05 EDT 2020. Contains 334699 sequences. (Running on oeis4.)