A007725 - OEIS

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A007725

Number of spanning trees of Aztec diamonds of order n.

1, 4, 768, 18170880, 48466759778304, 14179455913065873408000, 449549878218740179750040371200000, 1534679662450485063038349752542766158611218432, 561985025597966566291275288056092110323394467225010519932928 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	REFERENCES	`R. P. Stanley, Spanning trees of Aztec diamonds, Discrete Math. 157 (1996), 375-388 (Problem 251).` `Chow, Timothy Y. The Q-spectrum and spanning trees of tensor products of bipartite graphs. Proc. Amer. Math. Soc. 125 (1997), no. 11, 3155-3161.` `D. E. Knuth, J. Alg. Combinatorics 6 (1997), 253-257.`
	LINKS	`Index entries for sequences related to trees`
	CROSSREFS	`Sequence in context: A195625 A181200 A068112 * A102195 A114766 A202685` `Adjacent sequences: A007722 A007723 A007724 * A007726 A007727 A007728`
	KEYWORD	`nonn`
	AUTHOR	`R. P. Stanley [ rstan(AT)math.mit.edu ]`
	EXTENSIONS	`More terms from Alois P. Heinz (heinz(AT)hs-heilbronn.de), Jan 20 2011`

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Last modified February 17 06:27 EST 2012. Contains 205998 sequences.