A280440 - OEIS

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A280440 as a triangular array

											0
										0		0
									1		4		1
								2		10		10		2
							5		20		21		20		5
						10		38		42		42		38		10
					20		68		77		80		77		68		20
				38		120		136		138		138		136		120		38
			71		208		236		232		225		232		236		208		71
		130		358		404		386		360		360		386		404		358		130
	235		612		687		640		574		548		574		640		687

A280440 as a square array

0	0	1	2	5	10	20	38	71	130	235
0	4	10	20	38	68	120	208	358	612
1	10	21	42	77	136	236	404	687
2	20	42	80	138	232	386	640
5	38	77	138	225	360	574
10	68	136	232	360	548
20	120	236	386	574
38	208	404	640
71	358	687
130

A280440 as an upper right triangle

0	0	1	2	5	10	20	38	71	130	235
	0	4	10	20	38	68	120	208	358	612
		1	10	21	42	77	136	236	404	687
			2	20	42	80	138	232	386	640
				5	38	77	138	225	360	574
					10	68	136	232	360	548
						20	120	236	386	574
							38	208	404	640
								71	358	687
									130