A171388 - OEIS

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A171388 as a triangular array

							1
						2		0
					5		0		0
				12		1		0		0
			30		4		1		0		0
		74		17		4		1		0		0
	185		56		21		4		1		0		0
460		185		74		26		4		1		0		0

A171388 as a square array

1	2	5	12	30	74	185	460
0	0	1	4	17	56	185
0	0	1	4	21	74
0	0	1	4	26
0	0	1	4
0	0	1
0	0
0

A171388 as an upper right triangle

1	2	5	12	30	74	185	460
	0	0	1	4	17	56	185
		0	0	1	4	21	74
			0	0	1	4	26
				0	0	1	4
					0	0	1
						0	0
							0