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A226558 Number of equilateral triangles with coordinates (w,x,y,z) in the set {0, 1,...,n}. 1
64, 1984, 23232, 153824, 724352, 2661504, 8208640, 22114304, 53570368, 119129856, 246971072, 482429024, 896290944, 1594476160, 2732250688, 4529267712, 7292346816, 11438236320, 17528382400, 26300206624 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Eugen J. Ionascu, Equilateral triangles in Z^4, arXiv:1209.0147 [math.NT].
CROSSREFS
Cf. A102698.
Sequence in context: A203539 A116133 A010841 * A302856 A022085 A017780
KEYWORD
nonn
AUTHOR
Ray Chandler, Jun 10 2013
STATUS
approved

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Last modified March 2 20:50 EST 2024. Contains 370498 sequences. (Running on oeis4.)