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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; internal format)
OFFSET

1,1

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: A014969 A139820 A195590 * A178797 A100312 A204643

Adjacent sequences:  A071342 A071343 A071344 * A071346 A071347 A071348

KEYWORD

easy,nonn

AUTHOR

Hugo Pfoertner (hugo(AT)pfoertner.org), May 22 2002

EXTENSIONS

Edited by Don Reble (djr(AT)nk.ca), Nov 06 2005

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Last modified February 15 15:20 EST 2012. Contains 205823 sequences.