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A001184 Number of simple Hamiltonian rook paths connecting opposite corners of a 2n+1 X 2n+1 board. 9
1, 2, 104, 111712, 2688307514, 1445778936756068, 17337631013706758184626, 4628650743368437273677525554148, 27478778338807945303765092195103685118924 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..8.

FORMULA

a(n) = A121788(2n), n>0. - Ashutosh Mehra, Dec 19 2008

CROSSREFS

Sequence in context: A101530 A199945 A265655 * A098653 A119433 A042351

Adjacent sequences:  A001181 A001182 A001183 * A001185 A001186 A001187

KEYWORD

nonn,more,walk

AUTHOR

Don Knuth, Dec 07 1995

EXTENSIONS

a(7)-a(8) copied from A121788 by Alois P. Heinz, Sep 27 2014

STATUS

approved

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Last modified June 21 16:05 EDT 2018. Contains 305623 sequences. (Running on oeis4.)