A087468 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A087468 as a triangular array

												1
											3		2
										7		5		4
									12		10		8		6
								19		16		14		11		9
							27		24		21		18		15		13
						37		33		30		26		23		20		17
					48		44		40		36		32		29		25		22
				61		56		52		47		43		39		35		31		28
			75		70		65		60		55		51		46		42		38		34
		91		85		80		74		69		64		59		54		50		45		41
	108		102		96		90		84		79

A087468 as a square array

1	3	7	12	19	27	37	48	61	75	91	108
2	5	10	16	24	33	44	56	70	85	102
4	8	14	21	30	40	52	65	80	96
6	11	18	26	36	47	60	74	90
9	15	23	32	43	55	69	84
13	20	29	39	51	64	79
17	25	35	46	59
22	31	42	54
28	38	50
34	45
41

A087468 as an upper right triangle

1	3	7	12	19	27	37	48	61	75	91	108
	2	5	10	16	24	33	44	56	70	85	102
		4	8	14	21	30	40	52	65	80	96
			6	11	18	26	36	47	60	74	90
				9	15	23	32	43	55	69	84
					13	20	29	39	51	64	79
						17	25	35	46	59
							22	31	42	54
								28	38	50
									34	45
										41