A207831 - OEIS

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A207831 as a triangular array

												1
											2		3
										4		6		9
									7		11		5		14
								8		15		26		21		35
							10		18		33		59		38		73
						13		23		41		74		133		95		22
					12		25		48		89		163		30		65		43
				16		28		53		101		190		27		57		122		79
			20		36		64		117		218		408		381		324		202		123
		19		39		75		139		256		474		66		315		639		437		314
	32		51		90		165		304		560		86		152		467		172		265		49

A207831 as a square array

1	2	4	7	8	10	13	12	16	20	19	32
3	6	11	15	18	23	25	28	36	39	51
9	5	26	33	41	48	53	64	75	90
14	21	59	74	89	101	117	139	165
35	38	133	163	190	218	256	304
73	95	30	27	408	474	560
22	65	57	381	66	86
43	122	324	315	152
79	202	639	467
123	437	172
314	265
49

A207831 as an upper right triangle

1	2	4	7	8	10	13	12	16	20	19	32
	3	6	11	15	18	23	25	28	36	39	51
		9	5	26	33	41	48	53	64	75	90
			14	21	59	74	89	101	117	139	165
				35	38	133	163	190	218	256	304
					73	95	30	27	408	474	560
						22	65	57	381	66	86
							43	122	324	315	152
								79	202	639	467
									123	437	172
										314	265
											49