A276999 - OEIS

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A276999 as a triangular array

										0
									0		0
								0		0		1
							0		0		1		9
						0		0		1		12		93
					0		0		1		15		147		1175
				0		0		1		18		213		2070		17835
			0		0		1		21		291		3325		33825		317667
		0		0		1		24		381		5000		58575		635208		6506647
	0		0		1		27		483		7155		94785		1164429		13536453		150776397

A276999 as a square array

0	0	0	0	0	0	0	0	0	0
0	0	0	0	0	0	0	0	0
1	1	1	1	1	1	1	1
9	12	15	18	21	24	27
93	147	213	291	381	483
1175	2070	3325	5000	7155
17835	33825	58575	94785
317667	635208	1164429
6506647	13536453
150776397

A276999 as an upper right triangle

0	0	0	0	0	0	0	0	0	0
	0	0	0	0	0	0	0	0	0
		1	1	1	1	1	1	1	1
			9	12	15	18	21	24	27
				93	147	213	291	381	483
					1175	2070	3325	5000	7155
						17835	33825	58575	94785
							317667	635208	1164429
								6506647	13536453
									150776397