A285732 - OEIS

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A285732 as a triangular array

													-1
												1		1
											2		-2		3
										4		3		2		6
									7		5		-3		5		10
								11		8		6		4		9		15
							16		12		9		-4		8		14		21
						22		17		13		10		7		13		20		28
					29		23		18		14		-5		12		19		27		36
				37		30		24		19		15		11		18		26		35		45
			46		38		31		25		20		-6		17		25		34		44		55
		56		47		39		32		26		21		16		24		33		43		54		66
	67		57		48		40		33		27		-7		23		32		42		53		65		78

A285732 as a square array

-1	1	2	4	7	11	16	22	29	37	46	56	67
1	-2	3	5	8	12	17	23	30	38	47	57
3	2	-3	6	9	13	18	24	31	39	48
6	5	4	-4	10	14	19	25	32	40
10	9	8	7	-5	15	20	26	33
15	14	13	12	11	-6	21	27
21	20	19	18	17	16	-7
28	27	26	25	24	23
36	35	34	33	32
45	44	43	42
55	54	53
66	65
78

A285732 as an upper right triangle

-1	1	2	4	7	11	16	22	29	37	46	56	67
	1	-2	3	5	8	12	17	23	30	38	47	57
		3	2	-3	6	9	13	18	24	31	39	48
			6	5	4	-4	10	14	19	25	32	40
				10	9	8	7	-5	15	20	26	33
					15	14	13	12	11	-6	21	27
						21	20	19	18	17	16	-7
							28	27	26	25	24	23
								36	35	34	33	32
									45	44	43	42
										55	54	53
											66	65
												78