A216248 - OEIS

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A216248 as a triangular array

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

A216248 as a square array

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

A216248 as an upper right triangle

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