A197180 - OEIS

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A197180 as a triangular array

										1
									1		1
								2		5		2
							3		10		10		3
						4		23		41		23		4
					6		58		150		150		58		6
				9		144		665		969		665		144		9
			13		363		2695		7172		7172		2695		363		13
		19		917		11424		50864		92206		50864		11424		917		19
	28		2321		47528		367813		1096217		1096217		367813		47528		2321		28

A197180 as a square array

1	1	2	3	4	6	9	13	19	28
1	5	10	23	58	144	363	917	2321
2	10	41	150	665	2695	11424	47528
3	23	150	969	7172	50864	367813
4	58	665	7172	92206	1096217
6	144	2695	50864	1096217
9	363	11424	367813
13	917	47528
19	2321
28

A197180 as an upper right triangle

1	1	2	3	4	6	9	13	19	28
	1	5	10	23	58	144	363	917	2321
		2	10	41	150	665	2695	11424	47528
			3	23	150	969	7172	50864	367813
				4	58	665	7172	92206	1096217
					6	144	2695	50864	1096217
						9	363	11424	367813
							13	917	47528
								19	2321
									28