A227641 - OEIS

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A227641 as a triangular array

											1
										2		2
									3		5		3
								4		11		11		4
							5		23		39		23		5
						6		44		127		127		44		6
					7		78		377		667		377		78		7
				8		130		1014		3202		3202		1014		130		8
			9		206		2518		13740		25241		13740		2518		206		9
		10		313		5844		53575		179234		179234		53575		5844		313		10
	11		459		12790

A227641 as a square array

1	2	3	4	5	6	7	8	9	10	11
2	5	11	23	44	78	130	206	313	459
3	11	39	127	377	1014	2518	5844	12790
4	23	127	667	3202	13740	53575
5	44	377	3202	25241	179234
6	78	1014	13740	179234
7	130	2518	53575
8	206	5844
9	313
10

A227641 as an upper right triangle

1	2	3	4	5	6	7	8	9	10	11
	2	5	11	23	44	78	130	206	313	459
		3	11	39	127	377	1014	2518	5844	12790
			4	23	127	667	3202	13740	53575
				5	44	377	3202	25241	179234
					6	78	1014	13740	179234
						7	130	2518	53575
							8	206	5844
								9	313
									10