The OEIS mourns the passing of Jim Simons and is grateful to the Simons Foundation for its support of research in many branches of science, including the OEIS.
The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A035248 Indices of nonzero terms in expansion of Dirichlet series Product_p (1-(Kronecker(m,p)+1)*p^(-s)+Kronecker(m,p)*p^(-2s))^(-1) for m= -7 (A035182). 1
 1, 2, 4, 7, 8, 9, 11, 14, 16, 18, 22, 23, 25, 28, 29, 32, 36, 37, 43, 44, 46, 49, 50, 53, 56, 58, 63, 64, 67, 71, 72, 74, 77, 79, 81, 86, 88, 92, 98, 99, 100, 106, 107, 109, 112, 113, 116, 121, 126, 127, 128, 134, 137, 142, 144, 148, 149, 151, 154, 158, 161, 162, 163, 169, 172, 175 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS Is this A028951 with the initial 0 dropped? [Joerg Arndt, Dec 08 2013] LINKS Table of n, a(n) for n=1..66. MATHEMATICA Reap[For[n = 1, n < 200, n++, r = Reduce[x^2 + x y + 2 y^2 == n, {x, y}, Integers]; If[r =!= False, Sow[n]]]][[2, 1]] (* Jean-François Alcover, Oct 31 2016 *) PROG (PARI) m=-7; v=direuler(p=2, 301, 1/(1-(kronecker(m, p)*(X-X^2))-X)); for(j=1, #v, if(v[j], print1(j, ", "))); CROSSREFS Cf. A028951. [From R. J. Mathar, Oct 20 2008] Cf. A035182 (Expansion for m= -7). Sequence in context: A242937 A247979 A028951 * A190244 A182636 A116724 Adjacent sequences: A035245 A035246 A035247 * A035249 A035250 A035251 KEYWORD nonn AUTHOR N. J. A. Sloane. EXTENSIONS Added more terms, Joerg Arndt, Dec 08 2013 Definition corrected by Georg Fischer, Sep 03 2020 STATUS approved

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

Last modified May 26 07:52 EDT 2024. Contains 372807 sequences. (Running on oeis4.)