1,3
Eric Weisstein's World of Mathematics, Trigonometry Angles
Eric Weisstein's World of Mathematics, Sphere Line Picking
2^(n-A007814(n)-1)
A075101(n)/2
Cf. A000265, A007814, A075101.
Sequence in context: A022664 A053125 A038232 this_sequence A137393 A122749 A074676
Adjacent sequences: A084620 A084621 A084622 this_sequence A084624 A084625 A084626
nonn
Eric Weisstein (eric(AT)weisstein.com), Jun 01, 2003
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