A348863 - OEIS

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A348863 as a triangular array

												1
											1		1
										3		1		1
									7		6		0		1
								21		16		3		0		1
							57		51		13		0		0		1
						171		149		39		5		0		0		1
					499		454		117		23		0		0		0		1
				1497		1348		360		66		9		0		0		0		1
			4449		4083		1061		207		41		0		0		0		0		1
		13347		12191		3252		591		126		17		0		0		0		0		1
	39927		36658		9738		1799		370		81		0		0		0		0		0		1

A348863 as a square array

1	1	3	7	21	57	171	499	1497	4449	13347	39927
1	1	6	16	51	149	454	1348	4083	12191	36658
1	0	3	13	39	117	360	1061	3252	9738
1	0	0	5	23	66	207	591	1799
1	0	0	0	9	41	126	370
1	0	0	0	0	17	81
1	0	0	0	0	0
1	0	0	0	0
1	0	0	0
1	0	0
1	0
1

A348863 as an upper right triangle

1	1	3	7	21	57	171	499	1497	4449	13347	39927
	1	1	6	16	51	149	454	1348	4083	12191	36658
		1	0	3	13	39	117	360	1061	3252	9738
			1	0	0	5	23	66	207	591	1799
				1	0	0	0	9	41	126	370
					1	0	0	0	0	17	81
						1	0	0	0	0	0
							1	0	0	0	0
								1	0	0	0
									1	0	0
										1	0
											1