login

Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.

A103501
(1/8)*number of equilateral triangles that can be formed from the points of an (n+1)X(n+1)X(n+1) lattice cube.
8
1, 10, 46, 158, 431, 974, 2022, 3837, 6777, 11263, 17947, 27541, 40835, 58904, 83081, 114543, 155232, 206901, 271573, 351583, 449833, 569225, 712847, 884408, 1088136, 1328616, 1610007, 1937077, 2315434, 2750476, 3250073, 3820925, 4469597
OFFSET
1,2
LINKS
FORMULA
a(n) = A102698(n)/8.
CROSSREFS
Cf. all triangles in lattice cube A103426; special triangles in lattice cube: A103427, A103428, A103429, A103499, A103500; A103158 tetrahedra in lattice cube.
Sequence in context: A106600 A085437 A024166 * A219003 A003197 A096045
KEYWORD
nonn
AUTHOR
Hugo Pfoertner, Feb 08 2005
EXTENSIONS
a(32)-a(100) from Ray Chandler, Sep 15 2007
STATUS
approved