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!)
A118421 Number of integer solutions to n = x^2 + (2y)^2 + z(z+1)/2. 3
6, 4, 2, 12, 16, 10, 12, 16, 12, 14, 20, 4, 8, 24, 14, 20, 16, 16, 28, 32, 18, 12, 40, 4, 20, 44, 8, 22, 20, 28, 20, 32, 16, 8, 44, 18, 32, 24, 16, 44, 56, 24, 24, 32, 22, 48, 24, 24, 20, 36, 24, 36, 60, 12, 46, 36, 16, 32, 20, 24, 44, 40, 16, 32, 56, 26, 36, 72, 24, 32, 56, 24 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Eric Weisstein's World of Mathematics, Square-Triangle Theorem
CROSSREFS
Sequence in context: A345644 A019849 A244685 * A158233 A093604 A011408
KEYWORD
nonn
AUTHOR
Eric W. Weisstein, Apr 27 2006
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.

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 21 11:45 EDT 2024. Contains 374472 sequences. (Running on oeis4.)