[go: up one dir, main page]
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!)
A071345 a(n) = the maximum number of lattice points touched by an origin-centered 4d-sphere with radius <= n. 3
8, 32, 104, 192, 312, 576, 768, 960, 1344, 1872, 1920, 2496, 2976, 3072, 4608, 4608, 5760, 5760, 6912, 8064, 8064, 9672, 10368, 11520, 11520, 14976, 14976, 14976, 17424, 17784, 18432, 22464, 23808, 23808, 26208, 26208, 29760, 29952, 32832 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..39.
FORMULA
a(n) = max(1=0 to n^2) A000118(i)
EXAMPLE
a(4)=192 because the 4d-sphere with radius sqrt(14) touches 192 lattice points.
PROG
(FORTRAN) See A071339.
CROSSREFS
Cf. A000118, A071339-A071347.
Sequence in context: A241204 A195590 A373867 * A178797 A357285 A100312
Adjacent sequences: A071342 A071343 A071344 * A071346 A071347 A071348
KEYWORD
easy,nonn
AUTHOR
Hugo Pfoertner, May 22 2002
EXTENSIONS
Edited by Don Reble, Nov 06 2005
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 September 1 06:23 EDT 2024. Contains 375575 sequences. (Running on oeis4.)