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 A154588 Numbers that can be expressed as the sum of the first j integer numbers or the first k nonprime numbers, with j and k >=1. 0
 1, 28, 435, 10296, 415416, 1062153, 3703281, 426626655, 782002378, 102886232631, 1636197988776, 2749764593278, 61972139524851, 813577626225078, 1604393353172781, 3603538956517305, 44000970048906445, 83556903098276790, 208955344344897381 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS The indices (j,k) where A000217(j) = A051349(k) are (1,1), (7,5), (29,23), (143,123), (911,823), (1457,1327), (2721,2501), (29210,27488), (39547,37295) , (453621,433381) , (1808976,1737137) , (2345107,2253859) , (11133026,10746793), (40338012,39053670), (56646153,54880858) , (84894510,82314170) , (296651209,288273745), (408795555,397457085), (646460121,628975505). - Donovan Johnson, Sep 11 2009 LINKS FORMULA (A000217 INTERSECT A051349) MINUS {0}. - R. J. Mathar, Jan 21 2009 EXAMPLE 28 = A000217(7) = A051349(5). 435 = A000217(19) = A051349(23). 10296 = A000217(143) = A051349(123). CROSSREFS Cf. A007504, A051349, A066527, A133784, A154587. Sequence in context: A093974 A121803 A022656 * A125485 A054337 A009685 Adjacent sequences:  A154585 A154586 A154587 * A154589 A154590 A154591 KEYWORD nonn AUTHOR Paolo P. Lava & Giorgio Balzarotti, Jan 16 2009, Jan 19 2009 EXTENSIONS 10256 replaced with 10296 and two more terms added by R. J. Mathar, Jan 21 2009 Extended beyond a(9) by Donovan Johnson, Sep 11 2009 STATUS approved

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Last modified September 28 10:48 EDT 2021. Contains 347714 sequences. (Running on oeis4.)