A255975 - OEIS

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A255975 as a triangular array

												1
											3		2
										7		5		4
									12		10		8		6
								19		16		14		11		9
							27		24		21		18		15		13
						37		33		30		26		23		20		17
					49		44		40		36		32		29		25		22
				62		57		52		47		43		39		35		31		28
			77		71		66		60		55		51		46		42		38		34
		93		87		81		75		69		64		59		54		50		45		41
	111

A255975 as a square array

1	3	7	12	19	27	37	49	62	77	93	111
2	5	10	16	24	33	44	57	71	87
4	8	14	21	30	40	52	66	81
6	11	18	26	36	47	60	75
9	15	23	32	43	55	69
13	20	29	39	51	64
17	25	35	46	59
22	31	42	54
28	38	50
34	45
41

A255975 as an upper right triangle

1	3	7	12	19	27	37	49	62	77	93	111
	2	5	10	16	24	33	44	57	71	87
		4	8	14	21	30	40	52	66	81
			6	11	18	26	36	47	60	75
				9	15	23	32	43	55	69
					13	20	29	39	51	64
						17	25	35	46	59
							22	31	42	54
								28	38	50
									34	45
										41