A275490 - OEIS

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A275490 as a triangular array

											1
										1		5
									1		6		15
								1		7		21		35
							1		8		27		56		70
						1		9		33		77		126		126
					1		10		39		98		182		252		210
				1		11		45		119		238		378		462		330
			1		12		51		140		294		504		714		792		495
		1		13		57		161		350		630		966		1254		1287		715
	1		14		63		182		406		756		1218		1716		2079		2002		1001

A275490 as a square array

1	1	1	1	1	1	1	1	1	1	1
5	6	7	8	9	10	11	12	13	14
15	21	27	33	39	45	51	57	63
35	56	77	98	119	140	161	182
70	126	182	238	294	350	406
126	252	378	504	630	756
210	462	714	966	1218
330	792	1254	1716
495	1287	2079
715	2002
1001

A275490 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1
	5	6	7	8	9	10	11	12	13	14
		15	21	27	33	39	45	51	57	63
			35	56	77	98	119	140	161	182
				70	126	182	238	294	350	406
					126	252	378	504	630	756
						210	462	714	966	1218
							330	792	1254	1716
								495	1287	2079
									715	2002
										1001