A156823 - OEIS

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A156823 as a triangular array

									1
								1		1
							1		4		13
						1		11		90		670
					1		26		480		7870		122861
				1		57		2247		77527		2526198		80189094
			1		120		9807		695368		46334382		2999255160		191467330714
		1		247		41176		5924720		798773822		104443530554		13455795711072		1721026866650520
	1

A156823 as a square array

1	1	1	1	1	1	1	1	1
1	4	11	26	57	120	247
13	90	480	2247	9807	41176
670	7870	77527	695368	5924720
122861	2526198	46334382	798773822
80189094	2999255160	104443530554
191467330714	13455795711072
1721026866650520

A156823 as an upper right triangle

1	1	1	1	1	1	1	1	1
	1	4	11	26	57	120	247
		13	90	480	2247	9807	41176
			670	7870	77527	695368	5924720
				122861	2526198	46334382	798773822
					80189094	2999255160	104443530554
						191467330714	13455795711072
							1721026866650520