A101224 - OEIS

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A101224 as a triangular array

												1
											3		2
										7		6		5
									13		12		10		9
								21		20		18		16		15
							31		30		28		27		26		25
						43		42		40		36		33		32		31
					57		56		54		50		48		45		44		43
				73		72		70		66		65		64		63		62		61
			91		90		88		84		78		75		72		69		68		67
		111		110		108		104		98		96		95		92		90		88		87
	133		132		130		126

A101224 as a square array

1	3	7	13	21	31	43	57	73	91	111	133
2	6	12	20	30	42	56	72	90	110	132
5	10	18	28	40	54	70	88	108	130
9	16	27	36	50	66	84	104	126
15	26	33	48	65	78	98
25	32	45	64	75	96
31	44	63	72	95
43	62	69	92
61	68	90
67	88
87

A101224 as an upper right triangle

1	3	7	13	21	31	43	57	73	91	111	133
	2	6	12	20	30	42	56	72	90	110	132
		5	10	18	28	40	54	70	88	108	130
			9	16	27	36	50	66	84	104	126
				15	26	33	48	65	78	98
					25	32	45	64	75	96
						31	44	63	72	95
							43	62	69	92
								61	68	90
									67	88
										87