A252828 - OEIS

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A252828 as a triangular array

										1
									2		2
								4		6		4
							8		18		18		8
						15		53		81		53		15
					26		142		340		340		142		26
				42		339		1238		1920		1238		339		42
			64		729		3891		9075		9075		3891		729		64
		93		1437		10761		36292		54376		36292		10761		1437		93
	130		2638		26764		125892		271846		271846		125892

A252828 as a square array

1	2	4	8	15	26	42	64	93	130
2	6	18	53	142	339	729	1437	2638
4	18	81	340	1238	3891	10761	26764
8	53	340	1920	9075	36292	125892
15	142	1238	9075	54376	271846
26	339	3891	36292	271846
42	729	10761	125892
64	1437
93

A252828 as an upper right triangle

1	2	4	8	15	26	42	64	93	130
	2	6	18	53	142	339	729	1437	2638
		4	18	81	340	1238	3891	10761	26764
			8	53	340	1920	9075	36292	125892
				15	142	1238	9075	54376	271846
					26	339	3891	36292	271846
						42	729	10761	125892
							64	1437
								93