A380615 - OEIS

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A380615 as a triangular array

										1
									1		1
								2		2		1
							5		8		5		2
						18		38		34		14		3
					105		275		288		154		42		6
				902		2614		3102		1959		705		140		14
			9749		30346		39242		27898		11956		3142		473		34
		127072		415360		573654		446078		217000		68544		13886		1670		95
	1915951		6513999		9484003		7911844		4230802		1523176		373188		60614		5969		280

A380615 as a square array

1	1	2	5	18	105	902	9749	127072	1915951
1	2	8	38	275	2614	30346	415360	6513999
1	5	34	288	3102	39242	573654	9484003
2	14	154	1959	27898	446078	7911844
3	42	705	11956	217000	4230802
6	140	3142	68544	1523176
14	473	13886	373188
34	1670	60614
95	5969
280

A380615 as an upper right triangle

1	1	2	5	18	105	902	9749	127072	1915951
	1	2	8	38	275	2614	30346	415360	6513999
		1	5	34	288	3102	39242	573654	9484003
			2	14	154	1959	27898	446078	7911844
				3	42	705	11956	217000	4230802
					6	140	3142	68544	1523176
						14	473	13886	373188
							34	1670	60614
								95	5969
									280