A230831 - OEIS

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A230831 as a triangular array

											0
										0		0
									0		2		0
								0		2		2		0
							0		6		8		6		0
						0		16		10		10		16		0
					0		44		38		62		38		44		0
				0		124		130		176		176		130		124		0
			0		354		456		734		898		734		456		354		0
		0		1020		1610		3034		4350		4350		3034		1610		1020		0
	0		2956		5740		12962		22852		29446		22852		12962

A230831 as a square array

0	0	0	0	0	0	0	0	0	0	0
0	2	2	6	16	44	124	354	1020	2956
0	2	8	10	38	130	456	1610	5740
0	6	10	62	176	734	3034	12962
0	16	38	176	898	4350	22852
0	44	130	734	4350	29446
0	124	456	3034	22852
0	354	1610	12962
0	1020
0

A230831 as an upper right triangle

0	0	0	0	0	0	0	0	0	0	0
	0	2	2	6	16	44	124	354	1020	2956
		0	2	8	10	38	130	456	1610	5740
			0	6	10	62	176	734	3034	12962
				0	16	38	176	898	4350	22852
					0	44	130	734	4350	29446
						0	124	456	3034	22852
							0	354	1610	12962
								0	1020
									0