A290428 - OEIS

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A290428 as a triangular array

												1
											1		0
										1		1		0
									1		2		1		0
								1		2		4		1		0
							1		2		6		6		1		0
						1		2		7		14		9		1		0
					1		2		7		20		28		12		1		0
				1		2		7		22		53		52		16		1		0
			1		2		7		23		69		125		93		20		1		0
		1		2		7		23		76		198		287		152		25		1		0
	1		2		7		23		78		245		550		606		242		30		1		0

A290428 as a square array

1	1	1	1	1	1	1	1	1	1	1	1
0	1	2	2	2	2	2	2	2	2	2
0	1	4	6	7	7	7	7	7	7
0	1	6	14	20	22	23	23	23
0	1	9	28	53	69	76	78
0	1	12	52	125	198	245
0	1	16	93	287	550
0	1	20	152	606
0	1	25	242
0	1	30
0	1
0

A290428 as an upper right triangle

1	1	1	1	1	1	1	1	1	1	1	1
	0	1	2	2	2	2	2	2	2	2	2
		0	1	4	6	7	7	7	7	7	7
			0	1	6	14	20	22	23	23	23
				0	1	9	28	53	69	76	78
					0	1	12	52	125	198	245
						0	1	16	93	287	550
							0	1	20	152	606
								0	1	25	242
									0	1	30
										0	1
											0