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A082774
a(n) = floor(cot(2*Pi/prime(n))).
0
0, 0, 1, 1, 2, 2, 3, 4, 4, 5, 6, 6, 7, 8, 9, 9, 10, 11, 11, 12, 13, 14, 15, 16, 16, 17, 17, 17, 20, 20, 21, 22, 23, 24, 24, 25, 26, 27, 28, 28, 30, 30, 31, 31, 33, 35, 36, 36, 37, 38, 38, 39, 40, 41, 42, 43, 44, 44, 45, 46, 48, 49, 49, 50, 52, 53, 55, 55, 56, 57, 58, 59, 60, 60, 61
OFFSET
3,5
EXAMPLE
a(7) = 2 since prime(7) = 17 and floor(cot(2*Pi/17)) = 2.
CROSSREFS
Sequence in context: A135672 A265133 A064506 * A074239 A248333 A303905
KEYWORD
nonn,less
AUTHOR
Gary W. Adamson, May 22 2003
EXTENSIONS
More terms from Ray Chandler, Oct 11 2003
STATUS
approved