A125764 - OEIS

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A125764 as a triangular array

											1
										3		2
									6		7		3
								10		15		12		4
							15		26		27		18		5
						21		40		48		42		25		6
					28		57		75		76		60		33		7
				36		77		108		120		110		81		42		8
			45		100		147		174		175		150		105		52		9
		55		126		192		238		255		240		196		132		63		10
	66		155		243		312		350		351		315		248		162		75		11

A125764 as a square array

1	3	6	10	15	21	28	36	45	55	66
2	7	15	26	40	57	77	100	126	155
3	12	27	48	75	108	147	192	243
4	18	42	76	120	174	238	312
5	25	60	110	175	255	350
6	33	81	150	240	351
7	42	105	196	315
8	52	132	248
9	63	162
10	75
11

A125764 as an upper right triangle

1	3	6	10	15	21	28	36	45	55	66
	2	7	15	26	40	57	77	100	126	155
		3	12	27	48	75	108	147	192	243
			4	18	42	76	120	174	238	312
				5	25	60	110	175	255	350
					6	33	81	150	240	351
						7	42	105	196	315
							8	52	132	248
								9	63	162
									10	75
										11