A127399 - OEIS

A127399

Number of segments of the longest possible zigzag paths fitting into a circle of diameter 2 if the path with index n is constructed according to the rules of the "Snakes on a Plane" problem of Al Zimmermann's programming contest.

2, 6, 4, 6, 7, 7, 8, 11, 9, 11, 12, 14, 13, 17, 16, 19, 20, 20, 23, 23, 23, 27, 27, 28, 29

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OFFSET

2,1

COMMENTS

The extension of the contest problem to larger sets of hinge angles was proposed by James R. Buddenhagen. A link to the contest rules is given in A127400. Results up to n=32 were found by Markus Sigg. Known lower bounds for the next terms are a(27)>=29, a(28)>=32, a(29)>=34, a(30)>=34, a(31)>=34, a(32)>=39.

LINKS

Table of n, a(n) for n=2..26.

Hugo Pfoertner, Visualization of longest zigzag paths fitting into circle of diameter 2.

CROSSREFS

Cf. A127400 [solutions for container diameter 3], A127401 [solutions for container diameter 4], A122223, A122224, A122226 [solutions for hinge angles excluded from contest].

Sequence in context: A240232 A119250 A059773 * A240751 A212283 A247566

Adjacent sequences: A127396 A127397 A127398 * A127400 A127401 A127402

KEYWORD

hard,more,nonn

AUTHOR

Hugo Pfoertner, Jan 12 2007

STATUS

approved