A048149 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A048149 as a triangular array

											1
										3		3
									6		4		6
								11		8		8		11
							17		13		9		13		17
						26		19		15		15		19		26
					35		28		22		20		22		28		35
				45		37		30		26		26		30		37		45
			58		48		39		33		31		33		39		48		58
		73		62		52		43		41		41		43		52		62		73
	90		75		64		54		50		48		50		54		64		75		90

A048149 as a square array

1	3	6	11	17	26	35	45	58	73	90
3	4	8	13	19	28	37	48	62	75
6	8	9	15	22	30	39	52	64
11	13	15	20	26	33	43	54
17	19	22	26	31	41	50
26	28	30	33	41	48
35	37	39	43	50
45	48	52	54
58	62	64
73	75
90

A048149 as an upper right triangle

1	3	6	11	17	26	35	45	58	73	90
	3	4	8	13	19	28	37	48	62	75
		6	8	9	15	22	30	39	52	64
			11	13	15	20	26	33	43	54
				17	19	22	26	31	41	50
					26	28	30	33	41	48
						35	37	39	43	50
							45	48	52	54
								58	62	64
									73	75
										90