A264131 - OEIS

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A264131 as a triangular array

									1
								5		1
							25		13		1
						80		169		34		1
					256		1040		1156		89		1
				976		6400		13600		7921		233		1
			3721		53280		160000		178000		54289		610		1
		13725		443556		2920000		4000000		2330000		372100		1597		1
	50625		3383280		53290000		160564000		100000000

A264131 as a square array

1	5	25	80	256	976	3721	13725	50625
1	13	169	1040	6400	53280	443556	3383280
1	34	1156	13600	160000	2920000	53290000
1	89	7921	178000	4000000	160564000
1	233	54289	2330000	100000000
1	610	372100
1	1597
1

A264131 as an upper right triangle

1	5	25	80	256	976	3721	13725	50625
	1	13	169	1040	6400	53280	443556	3383280
		1	34	1156	13600	160000	2920000	53290000
			1	89	7921	178000	4000000	160564000
				1	233	54289	2330000	100000000
					1	610	372100
						1	1597
							1