A331306 - OEIS

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A331306 as a triangular array

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

A331306 as a square array

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

A331306 as an upper right triangle

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