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

 

Logo


Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A211806 Number of ordered triples (w,x,y) with all terms in {1,...,n} and 2w^2<=x^2+y^2. 2

%I

%S 1,5,16,36,69,119,190,282,399,547,726,940,1195,1493,1834,2224,2669,

%T 3165,3720,4338,5021,5771,6596,7494,8467,9521,10662,11890,13207,14621,

%U 16134,17742,19457,21283,23214,25258,27421,29703,32108,34638

%N Number of ordered triples (w,x,y) with all terms in {1,...,n} and 2w^2<=x^2+y^2.

%C Row 2 of A211808; see A211790 for a discussion and guide to related sequences.

%t (See the program at A211808.)

%Y Cf. A211790, A211808.

%K nonn

%O 1,2

%A _Clark Kimberling_, Apr 22 2012

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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified April 6 08:53 EDT 2020. Contains 333268 sequences. (Running on oeis4.)