A057944 - OEIS

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A057944 as a triangular array

												0
											1		1
										3		3		3
									6		6		6		6
								10		10		10		10		10
							15		15		15		15		15		15
						21		21		21		21		21		21		21
					28		28		28		28		28		28		28		28
				36		36		36		36		36		36		36		36		36
			45		45		45		45		45		45		45		45		45		45
		55		55		55		55		55		55		55		55		55		55		55
	66		66		66		66		66		66

A057944 as a square array

0	1	3	6	10	15	21	28	36	45	55	66
1	3	6	10	15	21	28	36	45	55	66
3	6	10	15	21	28	36	45	55	66
6	10	15	21	28	36	45	55	66
10	15	21	28	36	45	55	66
15	21	28	36	45	55	66
21	28	36	45	55
28	36	45	55
36	45	55
45	55
55

A057944 as an upper right triangle

0	1	3	6	10	15	21	28	36	45	55	66
	1	3	6	10	15	21	28	36	45	55	66
		3	6	10	15	21	28	36	45	55	66
			6	10	15	21	28	36	45	55	66
				10	15	21	28	36	45	55	66
					15	21	28	36	45	55	66
						21	28	36	45	55
							28	36	45	55
								36	45	55
									45	55
										55