A178346 - OEIS

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A178346 as a triangular array

											1
										1		1
									1		5		1
								1		18		18		1
							1		52		144		52		1
						1		131		766		766		131		1
					1		303		3273		6743		3273		303		1
				1		664		12312		45422		45422		12312		664		1
			1		1406		42844		261230		463348		261230		42844		1406		1
		1		2913		141936		1358100		3915312		3915312		1358100		141936		2913		1
	1		5953		455481		6595734		29172972		47114784		29172972		6595734		455481		5953		1

A178346 as a square array

1	1	1	1	1	1	1	1	1	1	1
1	5	18	52	131	303	664	1406	2913	5953
1	18	144	766	3273	12312	42844	141936	455481
1	52	766	6743	45422	261230	1358100	6595734
1	131	3273	45422	463348	3915312	29172972
1	303	12312	261230	3915312	47114784
1	664	42844	1358100	29172972
1	1406	141936	6595734
1	2913	455481
1	5953
1

A178346 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1
	1	5	18	52	131	303	664	1406	2913	5953
		1	18	144	766	3273	12312	42844	141936	455481
			1	52	766	6743	45422	261230	1358100	6595734
				1	131	3273	45422	463348	3915312	29172972
					1	303	12312	261230	3915312	47114784
						1	664	42844	1358100	29172972
							1	1406	141936	6595734
								1	2913	455481
									1	5953
										1