A101513 - OEIS

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A101513 as a triangular array

												1
											2		3
										4		6		8
									9		10		12		14
								5		7		15		16		18
							20		21		22		24		25		26
						11		13		27		28		30		32		33
					34		35		36		38		39		40		42		44
				17		19		45		46		48		49		50		51		52
			23		54		55		56		57		58		60		62		63		64
		29		31		65		66		68		69		70		72		74		75		76
	37		77		78		80		81		82

A101513 as a square array

1	2	4	9	5	20	11	34	17	23	29	37
3	6	10	7	21	13	35	19	54	31	77
8	12	15	22	27	36	45	55	65	78
14	16	24	28	38	46	56	66	80
18	25	30	39	48	57	68	81
26	32	40	49	58	69	82
33	42	50	60	70
44	51	62	72
52	63	74
64	75
76

A101513 as an upper right triangle

1	2	4	9	5	20	11	34	17	23	29	37
	3	6	10	7	21	13	35	19	54	31	77
		8	12	15	22	27	36	45	55	65	78
			14	16	24	28	38	46	56	66	80
				18	25	30	39	48	57	68	81
					26	32	40	49	58	69	82
						33	42	50	60	70
							44	51	62	72
								52	63	74
									64	75
										76