id:A154038 - OEIS Search Results

Search: id:A154038

Displaying 1-1 of 1 results found.

page 1

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 4.

+0
1

14, 25, 24, 27, 22, 18, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15, 16, 15, 15 (list; graph; listen)

	OFFSET	`3,1`
	COMMENT	`Pattern 15 16 15 starts at n=9 and continues through at least n=60.`
	EXAMPLE	`Maximal zeros solution for n=9` `..........2` `.........0.0` `........0.2.0` `.......2.0.0.2` `......0.0.2.0.0` `.....0.2.0.0.2.0` `....2.0.0.2.0.0.2` `...0.0.2.0.0.2.0.0` `..0.2.0.0.2.0.0.2.0`
	CROSSREFS	`Sequence in context: A141838 A140499 A068365 this_sequence A061923 A031075 A020227` `Adjacent sequences: A154035 A154036 A154037 this_sequence A154039 A154040 A154041`
	KEYWORD	`nonn`
	AUTHOR	`Ron Hardin (rhhardin(AT)att.net) Jan 04 2009`

page 1

Search completed in 0.002 seconds

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

AT&T Labs Research