A173739 - OEIS

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A173739 as a triangular array

											2
										3		3
									6		4		6
								13		8		8		13
							30		18		14		18		30
						71		46		28		28		46		71
					170		122		70		48		70		122		170
				409		330		192		108		108		192		330		409
			986		898		558		288		202		288		558		898		986
		2379		2450		1652		868		466		466		868		1652		2450		2379
	5742		6690		4934		2728		1338		880		1338		2728		4934		6690		5742

A173739 as a square array

2	3	6	13	30	71	170	409	986	2379	5742
3	4	8	18	46	122	330	898	2450	6690
6	8	14	28	70	192	558	1652	4934
13	18	28	48	108	288	868	2728
30	46	70	108	202	466	1338
71	122	192	288	466	880
170	330	558	868	1338
409	898	1652	2728
986	2450	4934
2379	6690
5742

A173739 as an upper right triangle

2	3	6	13	30	71	170	409	986	2379	5742
	3	4	8	18	46	122	330	898	2450	6690
		6	8	14	28	70	192	558	1652	4934
			13	18	28	48	108	288	868	2728
				30	46	70	108	202	466	1338
					71	122	192	288	466	880
						170	330	558	868	1338
							409	898	1652	2728
								986	2450	4934
									2379	6690
										5742