A123081 - OEIS

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A123081 as a triangular array

											1
										1		1
									2		2		2
								5		5		5		5
							15		15		15		15		15
						52		52		52		52		52		52
					203		203		203		203		203		203		203
				877		877		877		877		877		877		877		877
			4140		4140		4140		4140		4140		4140		4140		4140		4140
		21147		21147		21147		21147		21147		21147		21147		21147		21147		21147
	115975		115975		115975		115975

A123081 as a square array

1	1	2	5	15	52	203	877	4140	21147	115975
1	2	5	15	52	203	877	4140	21147	115975
2	5	15	52	203	877	4140	21147	115975
5	15	52	203	877	4140	21147	115975
15	52	203	877	4140	21147
52	203	877	4140	21147
203	877	4140	21147
877	4140	21147
4140	21147
21147

A123081 as an upper right triangle

1	1	2	5	15	52	203	877	4140	21147	115975
	1	2	5	15	52	203	877	4140	21147	115975
		2	5	15	52	203	877	4140	21147	115975
			5	15	52	203	877	4140	21147	115975
				15	52	203	877	4140	21147
					52	203	877	4140	21147
						203	877	4140	21147
							877	4140	21147
								4140	21147
									21147