A248978 - OEIS

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A248978 as a triangular array

											1
										4		1
									4		13		1
								4		94		28		1
							4		526		460		49		1
						4		2551		5860		1399		76		1
					4		11299		64180		30559		3316		109		1
				4		47020		635716		566374		109156		6724		148		1
			4		186988		5861188		9384358		3012196		309124		12244		193		1
		4		718429		51210820		143307490		73556068		11790874		747076		20605		244		1
	4		2686729		429124420		2056495090		1641197668		394515874		37488676		1608205		32644		301		1

A248978 as a square array

1	4	4	4	4	4	4	4	4	4	4
1	13	94	526	2551	11299	47020	186988	718429	2686729
1	28	460	5860	64180	635716	5861188	51210820	429124420
1	49	1399	30559	566374	9384358	143307490	2056495090
1	76	3316	109156	3012196	73556068	1641197668
1	109	6724	309124	11790874	394515874
1	148	12244	747076	37488676
1	193	20605	1608205
1	244	32644
1	301
1

A248978 as an upper right triangle

1	4	4	4	4	4	4	4	4	4	4
	1	13	94	526	2551	11299	47020	186988	718429	2686729
		1	28	460	5860	64180	635716	5861188	51210820	429124420
			1	49	1399	30559	566374	9384358	143307490	2056495090
				1	76	3316	109156	3012196	73556068	1641197668
					1	109	6724	309124	11790874	394515874
						1	148	12244	747076	37488676
							1	193	20605	1608205
								1	244	32644
									1	301
										1