id:A154044 - OEIS Search Results

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Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 3 X 3 X 3 subtriangle summing to 5.

+0
1

20, 40, 40, 43, 35, 33, 18, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10 (list; graph; listen)

	OFFSET	`3,1`
	COMMENT	`Value 10 starts at n=12 and continues through at least n=60.`
	EXAMPLE	`Maximal zeros solution for n=12` `.............0` `............0.0` `...........1.3.1` `..........1.0.0.1` `.........1.0.2.0.1` `........1.1.1.1.1.1` `.......0.2.0.1.0.2.0` `......1.0.1.1.1.1.0.1` `.....2.1.1.0.2.0.1.1.2` `....0.0.1.2.0.0.2.1.0.0` `...0.2.1.0.0.3.0.0.1.2.0` `..2.1.0.1.2.0.0.2.1.0.1.2`
	CROSSREFS	`Sequence in context: A132606 A054288 A040380 this_sequence A046794 A104153 A049057` `Adjacent sequences: A154041 A154042 A154043 this_sequence A154045 A154046 A154047`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 04 2009`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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