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A154073 Number of planar triangular n X n X n nonnegative integer grids with mirror symmetry about one altitude with every similarly oriented 4 X 4 X 4 subtriangle summing to 9. +0
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252, 2298, 1670, 5721, 2507, 7335, 2348, 4388, 1087, 1406, 468, 952, 386, 767, 373, 848, 373, 812, 373, 848, 373, 734, 370, 848, 373, 734, 373, 848, 373, 734, 373, 848, 370, 734, 373, 848, 373, 812, 373, 848, 373, 734, 370, 848, 373, 734, 373, 848, 373, 734, 373 (list; graph; listen)
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Last modified November 27 22:38 EST 2009. Contains 167602 sequences.

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