A131909 - OEIS

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A131909 as a triangular array

												1
											1		1
										1		1		2
									2		1		2		3
								3		2		3		3		5
							5		3		5		5		6		8
						8		5		8		8		10		11		14
					14		8		13		13		16		18		21		25
				25		14		22		21		26		29		34		39		46
			46		25		39		36		43		47		55		63		73		85
		85		46		71		64		75		79		90		102		118		136		158
	158		85		131		117		135		139		154		169

A131909 as a square array

1	1	1	2	3	5	8	14	25	46	85	158
1	1	1	2	3	5	8	14	25	46	85
2	2	3	5	8	13	22	39	71	131
3	3	5	8	13	21	36	64	117
5	6	10	16	26	43	75	135
8	11	18	29	47	79	139
14	21	34	55	90	154
25	39	63	102	169
46	73	118
85	136
158

A131909 as an upper right triangle

1	1	1	2	3	5	8	14	25	46	85	158
	1	1	1	2	3	5	8	14	25	46	85
		2	2	3	5	8	13	22	39	71	131
			3	3	5	8	13	21	36	64	117
				5	6	10	16	26	43	75	135
					8	11	18	29	47	79	139
						14	21	34	55	90	154
							25	39	63	102	169
								46	73	118
									85	136
										158