A028338 - OEIS

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A028338 as a triangular array

										1
									1		1
								3		4		1
							15		23		9		1
						105		176		86		16		1
					945		1689		950		230		25		1
				10395		19524		12139		3480		505		36		1
			135135		264207		177331		57379		10045		973		49		1
		2027025		4098240		2924172		1038016		208054		24640		1708		64		1
	34459425		71697105		53809164		20570444		4574934		626934		53676		2796		81		1

A028338 as a square array

1	1	3	15	105	945	10395	135135	2027025	34459425
1	4	23	176	1689	19524	264207	4098240	71697105
1	9	86	950	12139	177331	2924172	53809164
1	16	230	3480	57379	1038016	20570444
1	25	505	10045	208054	4574934
1	36	973	24640	626934
1	49	1708	53676
1	64	2796
1	81
1

A028338 as an upper right triangle

1	1	3	15	105	945	10395	135135	2027025	34459425
	1	4	23	176	1689	19524	264207	4098240	71697105
		1	9	86	950	12139	177331	2924172	53809164
			1	16	230	3480	57379	1038016	20570444
				1	25	505	10045	208054	4574934
					1	36	973	24640	626934
						1	49	1708	53676
							1	64	2796
								1	81
									1