A071948 - OEIS

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A071948 as a triangular array

										1
									1		2
								1		4		7
							1		6		18		30
						1		8		33		88		143
					1		10		52		182		455		728
				1		12		75		320		1020		2448		3876
			1		14		102		510		1938		5814		13566		21318
		1		16		133		760		3325		11704		33649		76912		120175
	1		18		168		1078		5313		21252		70840		197340		444015

A071948 as a square array

1	1	1	1	1	1	1	1	1	1
2	4	6	8	10	12	14	16	18
7	18	33	52	75	102	133	168
30	88	182	320	510	760	1078
143	455	1020	1938	3325	5313
728	2448	5814	11704	21252
3876	13566	33649	70840
21318	76912	197340
120175	444015

A071948 as an upper right triangle

1	1	1	1	1	1	1	1	1	1
	2	4	6	8	10	12	14	16	18
		7	18	33	52	75	102	133	168
			30	88	182	320	510	760	1078
				143	455	1020	1938	3325	5313
					728	2448	5814	11704	21252
						3876	13566	33649	70840
							21318	76912	197340
								120175	444015