A253240 - OEIS

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A253240 as a triangular array

														1
													1		-1
												1		0		1
											1		1		2		1
										1		2		3		3		1
									1		3		4		7		2		1
								1		4		5		13		5		5		1
							1		5		6		21		10		31		1		1
						1		6		7		31		17		121		3		7		1
					1		7		8		43		26		341		7		127		2		1
				1		8		9		57		37		781		13		1093		17		3		1
			1		9		10		73		50		1555		21		5461		82		73		1		1
		1		10		11		91		65		2801		31		19531		257		757		11		11		1
	1		11		12		111		82		4681		43		55987		626		4161		61		2047		1		1

A253240 as a square array

1	1	1	1	1	1	1	1	1	1	1	1	1	1
-1	0	1	2	3	4	5	6	7	8	9	10	11
1	2	3	4	5	6	7	8	9	10	11	12
1	3	7	13	21	31	43	57	73	91	111
1	2	5	10	17	26	37	50	65	82
1	5	31	121	341	781	1555	2801	4681
1	1	3	7	13	21	31	43
1	7	127	1093	5461	19531	55987
1	2	17	82	257	626
1	3	73	757	4161
1	1	11	61
1	11	2047
1	1
1

A253240 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1	1	1	1
	-1	0	1	2	3	4	5	6	7	8	9	10	11
		1	2	3	4	5	6	7	8	9	10	11	12
			1	3	7	13	21	31	43	57	73	91	111
				1	2	5	10	17	26	37	50	65	82
					1	5	31	121	341	781	1555	2801	4681
						1	1	3	7	13	21	31	43
							1	7	127	1093	5461	19531	55987
								1	2	17	82	257	626
									1	3	73	757	4161
										1	1	11	61
											1	11	2047
												1	1
													1