A111578 - OEIS

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A111578 as a triangular array

										1
									1		1
								1		6		1
							1		31		15		1
						1		156		166		28		1
					1		781		1650		530		45		1
				1		3906		15631		8540		1295		66		1
			1		19531		144585		126651		30555		2681		91		1
		1		97656		1320796		1791048		646086		86856		4956		120		1
	1		488281		11984820		24604420		12774510

A111578 as a square array

1	1	1	1	1	1	1	1	1	1
1	6	31	156	781	3906	19531	97656	488281
1	15	166	1650	15631	144585	1320796	11984820
1	28	530	8540	126651	1791048	24604420
1	45	1295	30555	646086	12774510
1	66	2681	86856
1	91	4956
1	120
1

A111578 as an upper right triangle

1	1	1	1	1	1	1	1	1	1
	1	6	31	156	781	3906	19531	97656	488281
		1	15	166	1650	15631	144585	1320796	11984820
			1	28	530	8540	126651	1791048	24604420
				1	45	1295	30555	646086	12774510
					1	66	2681	86856
						1	91	4956
							1	120
								1