The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A280452 G.f.: Product_{k>=1, j>=1} (1 + x^(j^2*k^2)). 2
 1, 1, 0, 0, 2, 2, 0, 0, 1, 3, 2, 0, 0, 4, 4, 0, 3, 5, 3, 1, 6, 6, 2, 2, 3, 11, 9, 1, 0, 16, 16, 0, 3, 11, 15, 7, 10, 10, 14, 14, 11, 23, 19, 9, 6, 36, 32, 4, 5, 31, 46, 18, 16, 26, 48, 36, 25, 35, 38, 36, 20, 60, 60, 28, 20, 82, 98, 30, 31, 65, 104, 64, 40 (list; graph; refs; listen; history; text; internal format)
 OFFSET 0,5 LINKS Vaclav Kotesovec, Table of n, a(n) for n = 0..10000 MATHEMATICA nmax = 100; CoefficientList[Series[Product[(1 + x^(j^2*k^2)), {k, 1, Floor[Sqrt[nmax]]+1}, {j, 1, Floor[Sqrt[nmax/k^2]] + 1}], {x, 0, nmax}], x] CROSSREFS Cf. A107742, A280451, A280453. Sequence in context: A225927 A029392 A035379 * A096587 A136438 A059848 Adjacent sequences: A280449 A280450 A280451 * A280453 A280454 A280455 KEYWORD nonn AUTHOR Vaclav Kotesovec, Jan 03 2017 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 March 22 18:49 EDT 2023. Contains 361433 sequences. (Running on oeis4.)