A245300 - OEIS

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A245300 as a triangular array

											0
										1		4
									3		7		12
								6		11		17		24
							10		16		23		31		40
						15		22		30		39		49		60
					21		29		38		48		59		71		84
				28		37		47		58		70		83		97		112
			36		46		57		69		82		96		111		127		144
		45		56		68		81		95		110		126		143		161		180
	55		67		80		94		109		125		142		160		179		199		220

A245300 as a square array

0	1	3	6	10	15	21	28	36	45	55
4	7	11	16	22	29	37	46	56	67
12	17	23	30	38	47	57	68	80
24	31	39	48	58	69	81	94
40	49	59	70	82	95	109
60	71	83	96	110	125
84	97	111	126	142
112	127	143	160
144	161	179
180	199
220

A245300 as an upper right triangle

0	1	3	6	10	15	21	28	36	45	55
	4	7	11	16	22	29	37	46	56	67
		12	17	23	30	38	47	57	68	80
			24	31	39	48	58	69	81	94
				40	49	59	70	82	95	109
					60	71	83	96	110	125
						84	97	111	126	142
							112	127	143	160
								144	161	179
									180	199
										220