The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A076871 Sum of two powerful(1) numbers (A001694). 12
 2, 5, 8, 9, 10, 12, 13, 16, 17, 18, 20, 24, 25, 26, 28, 29, 31, 32, 33, 34, 35, 36, 37, 40, 41, 43, 44, 45, 48, 50, 52, 53, 54, 57, 58, 59, 61, 63, 64, 65, 68, 72, 73, 74, 76, 80, 81, 82, 85, 88, 89, 90, 91, 96, 97, 98, 99, 100, 101, 104, 106, 108, 109, 112, 113, 116, 117 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A085252(a(n))>0; complement of A085253. - Reinhard Zumkeller, Jun 23 2003 REFERENCES A. Ivic, The Riemann Zeta-Function, Wiley, NY, 1985, see p. 439. LINKS Valentin Blomer, Binary quadratic forms with large discriminants and sums of two squareful numbers II, Journal of the London Mathematical Society 71:1 (2005), pp. 69-84. FORMULA Blomer shows that there are x/log^k x sums of two powerful numbers up to x, where k = 0.20629947... is A261883. - Charles R Greathouse IV, Sep 04 2015 CROSSREFS Cf. A001694, A076872, A261883. Different from A070049. Sequence in context: A288730 A276784 A153129 * A070049 A085254 A274035 Adjacent sequences:  A076868 A076869 A076870 * A076872 A076873 A076874 KEYWORD nonn,easy,changed AUTHOR N. J. A. Sloane, Nov 25 2002 EXTENSIONS More terms from Vladeta Jovovic, Nov 25 2002 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recent
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified January 26 05:10 EST 2020. Contains 331273 sequences. (Running on oeis4.)