A123794 - OEIS

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A123794

Number of ways, counted up to symmetry, to build a contiguous building with n LEGO blocks of size 1x6.

1, 24, 1861, 168661, 16902651, 1797062518, 199090941069 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	REFERENCES	`M. Abrahamsen and S. Eilers, Efficient counting of LEGO buildings, in preparation` `B. Durhuus and S. Eilers, On the entropy of LEGO, arXiv:math.CO/0504039`
	LINKS	`S. Eilers, LEGO counts`
	CROSSREFS	`Sequence in context: A054777 A084224 A166788 * A006685 A002671 A003738` `Adjacent sequences: A123791 A123792 A123793 * A123795 A123796 A123797`
	KEYWORD	`nonn,hard`
	AUTHOR	`Soren Eilers (eilers(AT)math.ku.dk), Oct 29 2006`

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Last modified February 16 14:37 EST 2012. Contains 205930 sequences.