A278458 - OEIS

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A278458 as a triangular array

									1
								2		2
							9		15		8
						64		156		144		52
					625		2050		2675		1730		472
				7776		32430		55000		50310		25108		5504
			117649		599319		1258775		1484245		1052184		428036		78416
		2097152		12669496		31902416		46103680		42064736		24421096		8389552		1320064
	43046721		301574340		888996066		1524644856		1698413409		1269814980		625219644		185935104		25637824

A278458 as a square array

1	2	9	64	625	7776	117649	2097152	43046721
2	15	156	2050	32430	599319	12669496	301574340
8	144	2675	55000	1258775	31902416	888996066
52	1730	50310	1484245	46103680	1524644856
472	25108	1052184	42064736	1698413409
5504	428036	24421096	1269814980
78416	8389552	625219644
1320064	185935104
25637824

A278458 as an upper right triangle

1	2	9	64	625	7776	117649	2097152	43046721
	2	15	156	2050	32430	599319	12669496	301574340
		8	144	2675	55000	1258775	31902416	888996066
			52	1730	50310	1484245	46103680	1524644856
				472	25108	1052184	42064736	1698413409
					5504	428036	24421096	1269814980
						78416	8389552	625219644
							1320064	185935104
								25637824