A211980 - OEIS

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A211980 as a triangular array

												1
											2		1
										3		2		1
									5		4		3		2
								7		6		5		4		2
							11		10		9		8		6		4
						15		14		13		12		10		8		4
					22		21		20		19		17		15		11		7
				30		29		28		27		25		23		19		15		8
			42		41		40		39		37		35		31		27		20		12
		56		55		54		53		51		49		45		41		34		26		14
	77		76		75

A211980 as a square array

1	2	3	5	7	11	15	22	30	42	56	77
1	2	4	6	10	14	21	29	41	55	76
1	3	5	9	13	20	28	40	54	75
2	4	8	12	19	27	39	53
2	6	10	17	25	37	51
4	8	15	23	35	49
4	11	19	31	45
7	15	27	41
8	20	34
12	26
14

A211980 as an upper right triangle

1	2	3	5	7	11	15	22	30	42	56	77
	1	2	4	6	10	14	21	29	41	55	76
		1	3	5	9	13	20	28	40	54	75
			2	4	8	12	19	27	39	53
				2	6	10	17	25	37	51
					4	8	15	23	35	49
						4	11	19	31	45
							7	15	27	41
								8	20	34
									12	26
										14