id:A153903 - OEIS Search Results

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Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 1 one in any 4 X 4 X 4 subtriangle.

+0
1

1, 2, 2, 3, 3, 7, 10, 21, 34, 88, 150, 421, 807, 2708, 6019, 22444, 58037, 245472, 706322, 3364913, 10967191, 59955069, 222028350, 1374087876, 5812458172, 40846719268, 195779164954, 1558347753536, 8466932734756, 76665491618022, 472779311230382 (list; graph; listen)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A162223 A133076 A032060 this_sequence A095741 A110880 A095060` `Adjacent sequences: A153900 A153901 A153902 this_sequence A153904 A153905 A153906`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 03 2009`

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Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

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