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A222200 Number of Hamiltonian cycles on n X n+1 square grid of points. 4
1, 2, 14, 154, 5320, 301384, 49483138, 13916993782, 10754797724124, 14746957510647992, 53540340738182687296, 354282765498796010420944, 6040964455632840415885507728, 191678405883294971709423926242394 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

LINKS

Table of n, a(n) for n=2..15.

Peter Tittmann, Enumeration in graphs: counting Hamiltonian cycles [Broken link?]

Peter Tittman, Illustration of a(4) = 14 [Taken from preceding link]

Peter Tittmann, Enumeration in graphs: counting Hamiltonian cycles [Backup copy of top page only, on the Internet Archive]

Index entries for sequences related to graphs, Hamiltonian

FORMULA

a(n) = A321172(n,n+1) = A321172(n+1,n). - Robert FERREOL, Apr 01 2019

CROSSREFS

Cf. A003763, A321172.

Sequence in context: A219430 A301931 A060193 * A175564 A332693 A196791

Adjacent sequences:  A222197 A222198 A222199 * A222201 A222202 A222203

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Feb 14 2013

STATUS

approved

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Last modified September 26 10:08 EDT 2021. Contains 347664 sequences. (Running on oeis4.)