A143129 - OEIS

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A143129 as a triangular array

										1
									5		4
								15		14		10
							35		34		30		20
						70		69		65		55		35
					126		125		121		111		91		56
				210		209		205		195		175		140		84
			330		329		325		315		295		260		204		120
		495		494		490		480		460		425		369		285		165
	715		714		710		700		680		645		589		505		385		220
1001		1000

A143129 as a square array

1	5	15	35	70	126	210	330	495	715	1001
4	14	34	69	125	209	329	494	714	1000
10	30	65	121	205	325	490	710
20	55	111	195	315	480	700
35	91	175	295	460	680
56	140	260	425	645
84	204	369	589
120	285	505
165	385
220

A143129 as an upper right triangle

1	5	15	35	70	126	210	330	495	715	1001
	4	14	34	69	125	209	329	494	714	1000
		10	30	65	121	205	325	490	710
			20	55	111	195	315	480	700
				35	91	175	295	460	680
					56	140	260	425	645
						84	204	369	589
							120	285	505
								165	385
									220