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

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A268535 Number of solutions to Nickerson variant of Langford (or Langford-Skolem) problem, as n runs through the positive numbers congruent to 0 or 1 mod 4. 1

%I #12 Feb 23 2016 13:18:51

%S 1,3,5,252,1328,227968,1520280,700078384,6124491248,5717789399488,

%T 61782464083584,102388058845620672,1317281759888482688

%N Number of solutions to Nickerson variant of Langford (or Langford-Skolem) problem, as n runs through the positive numbers congruent to 0 or 1 mod 4.

%C See A059106 which is the main entry for this sequence. This is A059106 with the 0's omitted.

%D For references, see A059106.

%H Ali Assarpour, Amotz Bar-Noy, Ou Liuo, <a href="http://arxiv.org/abs/1507.00315">Counting the Number of Langford Skolem Pairings</a>, arXiv:1507.00315 [cs.DM], 2015.

%Y Cf. A059106.

%K nonn,more

%O 1,2

%A _N. J. A. Sloane_, Feb 22 2016

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified May 23 16:12 EDT 2024. Contains 372765 sequences. (Running on oeis4.)