A225281 - OEIS

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A225281 as a triangular array

													1
												2		1
											3		3		1
										4		6		4		1
									5		9		9		5		1
								6		14		15		12		6		1
							7		19		26		21		15		7		1
						8		25		36		36		27		18		8		1
					9		32		49		51		46		33		21		9		1
				10		39		66		71		66		56		39		24		10		1
			11		47		85		94		92		81		66		45		27		11		1
		12		56		103		123		122		113		96		76		51		30		12		1
	13		64

A225281 as a square array

1	2	3	4	5	6	7	8	9	10	11	12	13
1	3	6	9	14	19	25	32	39	47	56	64
1	4	9	15	26	36	49	66	85	103
1	5	12	21	36	51	71	94	123
1	6	15	27	46	66	92	122
1	7	18	33	56	81	113
1	8	21	39	66	96
1	9	24	45	76
1	10	27	51
1	11	30
1	12
1

A225281 as an upper right triangle

1	2	3	4	5	6	7	8	9	10	11	12	13
	1	3	6	9	14	19	25	32	39	47	56	64
		1	4	9	15	26	36	49	66	85	103
			1	5	12	21	36	51	71	94	123
				1	6	15	27	46	66	92	122
					1	7	18	33	56	81	113
						1	8	21	39	66	96
							1	9	24	45	76
								1	10	27	51
									1	11	30
										1	12
											1