A166309 - OEIS

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A166309 as a triangular array

												1
											3		2
										4		6		8
									5		7		9		11
								16		21		10		12		14
							19		24		29		13		15		17
						22		27		32		37		42		18		20
					25		30		35		40		45		50		55		23
				28		33		38		43		48		53		58		63		26
			31		36		41		46		51		56		61		66		71		76
		34		39		44		49		54		59		64		69		74		79		84
	97		110		47		52		57		62

A166309 as a square array

1	3	4	5	16	19	22	25	28	31	34	97
2	6	7	21	24	27	30	33	36	39	110
8	9	10	29	32	35	38	41	44	47
11	12	13	37	40	43	46	49	52
14	15	42	45	48	51	54	57
17	18	50	53	56	59	62
20	55	58	61	64
23	63	66	69
26	71	74
76	79
84

A166309 as an upper right triangle

1	3	4	5	16	19	22	25	28	31	34	97
	2	6	7	21	24	27	30	33	36	39	110
		8	9	10	29	32	35	38	41	44	47
			11	12	13	37	40	43	46	49	52
				14	15	42	45	48	51	54	57
					17	18	50	53	56	59	62
						20	55	58	61	64
							23	63	66	69
								26	71	74
									76	79
										84