A143037 - OEIS

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A143037 as a triangular array

										1
									3		4
								6		9		10
							10		16		19		20
						15		25		31		34		35
					21		36		46		52		55		56
				28		49		64		74		80		83		84
			36		64		85		100		110		116		119		120
		45		81		109		130		145		155		161		164		165
	55		100		136		164		185		200		210		216		219		220

A143037 as a square array

1	3	6	10	15	21	28	36	45	55
4	9	16	25	36	49	64	81	100
10	19	31	46	64	85	109	136
20	34	52	74	100	130	164
35	55	80	110	145	185
56	83	116	155	200
84	119	161	210
120	164	216
165	219
220

A143037 as an upper right triangle

1	3	6	10	15	21	28	36	45	55
	4	9	16	25	36	49	64	81	100
		10	19	31	46	64	85	109	136
			20	34	52	74	100	130	164
				35	55	80	110	145	185
					56	83	116	155	200
						84	119	161	210
							120	164	216
								165	219
									220