A268003 - OEIS

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A268003 as a triangular array

								1
							2		2
						5		14		4
					14		187		122		7
				45		3552		11051		938		12
			163		93311		1880990		605969		6734		20
		657		3201247		555258347		982227549		30785259		45938		33
	2910		137687080		256785961187		3511764501993		477324637497		1470330667		302402		54

A268003 as a square array

1	2	5	14	45	163	657	2910
2	14	187	3552	93311	3201247	137687080
4	122	11051	1880990	555258347	256785961187
7	938	605969	982227549	3511764501993
12	6734	30785259	477324637497
20	45938	1470330667
33	302402
54

A268003 as an upper right triangle

1	2	5	14	45	163	657	2910
	2	14	187	3552	93311	3201247	137687080
		4	122	11051	1880990	555258347	256785961187
			7	938	605969	982227549	3511764501993
				12	6734	30785259	477324637497
					20	45938	1470330667
						33	302402
							54