A254204 - OEIS

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A254204 as a triangular array

												1
											2		0
										2		1		0
									3		1		2		0
								3		4		4		6		1
							4		4		17		9		11		0
						5		11		18		54		21		27		0
					6		16		47		59		176		47		53		1
				6		23		68		195		204		610		118		133		0
			7		23		119		315		898		769		2197		333		310		0
		7		34		131		676		1653		4353		3098		8358		984		691		1
	8		34		226		786		4078

A254204 as a square array

1	2	2	3	3	4	5	6	6	7	7	8
0	1	1	4	4	11	16	23	23	34	34
0	2	4	17	18	47	68	119	131	226
0	6	9	54	59	195	315	676	786
1	11	21	176	204	898	1653	4078
0	27	47	610	769	4353
0	53	118	2197	3098
1	133	333	8358
0	310	984
0	691
1

A254204 as an upper right triangle

1	2	2	3	3	4	5	6	6	7	7	8
	0	1	1	4	4	11	16	23	23	34	34
		0	2	4	17	18	47	68	119	131	226
			0	6	9	54	59	195	315	676	786
				1	11	21	176	204	898	1653	4078
					0	27	47	610	769	4353
						0	53	118	2197	3098
							1	133	333	8358
								0	310	984
									0	691
										1