A153948 - OEIS

This site is supported by donations to The OEIS Foundation.

A153948

Number of planar n X n X n binary triangular grids with mirror symmetry about one altitude with no more than 6 ones in any 4 X 4 X 4 subtriangle.

1, 2, 4, 16, 48, 338, 2112, 27873, 325940, 7927215, 173294023, 7887044079, 319688425834, 27098632121268, 2049789115719959, 323784392678130807, 45665932705751433387, 13440450508552654148691 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	CROSSREFS	`Sequence in context: A153951 A165905 A104354 * A010362 A001472 A053498` `Adjacent sequences: A153945 A153946 A153947 * A153949 A153950 A153951`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Jan 03 2009`

Content is available under The OEIS End-User License Agreement .

Last modified February 14 23:53 EST 2012. Contains 205689 sequences.