A193973 - OEIS

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A193973 as a triangular array

												2
											3		5
										4		7		9
									5		9		12		14
								6		11		15		18		20
							7		13		18		22		25		27
						8		15		21		26		30		33		35
					9		17		24		30		35		39		42		44
				10		19		27		34		40		45		49		52		54
			11		21		30		38		45		51		56		60		63		65
		12		23		33		42		50		57		63		68		72		75		77
	13		25		36		46

A193973 as a square array

2	3	4	5	6	7	8	9	10	11	12	13
5	7	9	11	13	15	17	19	21	23	25
9	12	15	18	21	24	27	30	33	36
14	18	22	26	30	34	38	42	46
20	25	30	35	40	45	50
27	33	39	45	51	57
35	42	49	56	63
44	52	60	68
54	63	72
65	75
77

A193973 as an upper right triangle

2	3	4	5	6	7	8	9	10	11	12	13
	5	7	9	11	13	15	17	19	21	23	25
		9	12	15	18	21	24	27	30	33	36
			14	18	22	26	30	34	38	42	46
				20	25	30	35	40	45	50
					27	33	39	45	51	57
						35	42	49	56	63
							44	52	60	68
								54	63	72
									65	75
										77