A303842 - OEIS

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A303842 as a triangular array

											1
										1		1
									1		1		2
								1		2		3		3
							1		2		6		6		6
						1		3		9		15		16		11
					1		3		13		26		43		37		23
				1		4		17		46		88		116		96		47
			1		4		23		68		169		273		329		239		106
		1		5		28		103		287		585		869		918		622		235
	1		5		35		141		467		1104		2031		2695		2609		1607		551

A303842 as a square array

1	1	1	1	1	1	1	1	1	1	1
1	1	2	2	3	3	4	4	5	5
2	3	6	9	13	17	23	28	35
3	6	15	26	46	68	103	141
6	16	43	88	169	287	467
11	37	116	273	585	1104
23	96	329	869	2031
47	239	918	2695
106	622	2609
235	1607
551

A303842 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1
	1	1	2	2	3	3	4	4	5	5
		2	3	6	9	13	17	23	28	35
			3	6	15	26	46	68	103	141
				6	16	43	88	169	287	467
					11	37	116	273	585	1104
						23	96	329	869	2031
							47	239	918	2695
								106	622	2609
									235	1607
										551