A076062 - OEIS

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A076062 as a triangular array

												2
											1		5
										3		4		8
									6		7		9		13
								10		11		12		14		19
							15		16		17		18		20		31
						21		22		23		24		25		26		29
					27		28		30		32		33		34		35		47
				36		37		38		39		40		41		42		43		52
			44		45		46		48		49		50		51		53		54		82
		55		56		57		58		59		60		61		62		63		64		87
	65		66		67		68		69		70

A076062 as a square array

2	1	3	6	10	15	21	27	36	44	55	65
5	4	7	11	16	22	28	37	45	56	66
8	9	12	17	23	30	38	46	57	67
13	14	18	24	32	39	48	58	68
19	20	25	33	40	49	59	69
31	26	34	41	50	60	70
29	35	42	51	61
47	43	53	62
52	54	63
82	64
87

A076062 as an upper right triangle

2	1	3	6	10	15	21	27	36	44	55	65
	5	4	7	11	16	22	28	37	45	56	66
		8	9	12	17	23	30	38	46	57	67
			13	14	18	24	32	39	48	58	68
				19	20	25	33	40	49	59	69
					31	26	34	41	50	60	70
						29	35	42	51	61
							47	43	53	62
								52	54	63
									82	64
										87