A331307 - OEIS

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A331307 as a triangular array

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

A331307 as a square array

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

A331307 as an upper right triangle

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