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A329319
Number of (directed) Hamiltonian paths in K_{n} X K_{3}.
2
6, 60, 1512, 83520, 8869680, 1621680480, 472907393280, 207307564531200, 130417226086775040, 113438068529746060800, 132325125941706622848000, 201817805274824171102208000
OFFSET
1,1
COMMENTS
Equivalently, number of full spectrum rook's walks on a (n X 3) board.
CROSSREFS
Column 3 of A269565.
Cf. A096121.
Sequence in context: A285955 A001416 A251184 * A351165 A003267 A271681
KEYWORD
nonn,more
AUTHOR
Mikhail Kurkov, Nov 10 2019
STATUS
approved