A101543 - OEIS

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A101543 as a triangular array

												2
											4		6
										3		8		9
									10		12		14		15
								5		7		16		18		20
							21		22		24		25		26		27
						11		13		28		30		32		33		34
					17		35		36		38		39		40		42		44
				19		45		46		48		49		50		51		52		54
			23		55		56		57		58		60		62		63		64		65
		29		31		66		68		69		70		72		74		75		76		77
	37		78		80		81		82		84

A101543 as a square array

2	4	3	10	5	21	11	17	19	23	29	37
6	8	12	7	22	13	35	45	55	31	78
9	14	16	24	28	36	46	56	66	80
15	18	25	30	38	48	57	68	81
20	26	32	39	49	58	69	82
27	33	40	50	60	70	84
34	42	51	62	72
44	52	63	74
54	64	75
65	76
77

A101543 as an upper right triangle

2	4	3	10	5	21	11	17	19	23	29	37
	6	8	12	7	22	13	35	45	55	31	78
		9	14	16	24	28	36	46	56	66	80
			15	18	25	30	38	48	57	68	81
				20	26	32	39	49	58	69	82
					27	33	40	50	60	70	84
						34	42	51	62	72
							44	52	63	74
								54	64	75
									65	76
										77