A210881 - OEIS

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A210881 as a triangular array

												1
											1		3
										3		4		4
									4		7		5		7
								5		9		10		9		11
							6		11		13		17		14		18
						7		13		16		22		27		23		29
					8		15		19		27		35		44		37		47
				9		17		22		32		43		57		71		60		76
			10		19		25		37		51		70		92		115		97		123
		11		21		28		42		59		83		113		149		186		157		199
	12		23		31

A210881 as a square array

1	1	3	4	5	6	7	8	9	10	11	12
3	4	7	9	11	13	15	17	19	21	23
4	5	10	13	16	19	22	25	28	31
7	9	17	22	27	32	37	42
11	14	27	35	43	51	59
18	23	44	57	70	83
29	37	71	92	113
47	60	115	149
76	97	186
123	157
199

A210881 as an upper right triangle

1	1	3	4	5	6	7	8	9	10	11	12
	3	4	7	9	11	13	15	17	19	21	23
		4	5	10	13	16	19	22	25	28	31
			7	9	17	22	27	32	37	42
				11	14	27	35	43	51	59
					18	23	44	57	70	83
						29	37	71	92	113
							47	60	115	149
								76	97	186
									123	157
										199