A154094 - OEIS

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A154094

Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 5 X 5 X 5 subtriangle summing to 15.

22308, 168794, 505725, 1434840, 2268199, 4350854, 6106648, 6385418, 5120411 (list; graph; refs; listen; history; internal format)

	OFFSET	`5,1`
	CROSSREFS	`Sequence in context: A204148 A119568 A204333 * A206656 A204305 A153770` `Adjacent sequences: A154091 A154092 A154093 * A154095 A154096 A154097`
	KEYWORD	`nonn`
	AUTHOR	`R. H. Hardin (rhhardin(AT)att.net) Jan 04 2009`

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Last modified February 14 16:10 EST 2012. Contains 205635 sequences.