A272908 - OEIS

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

A272908 as a triangular array

											1
										2		5
									3		7		8
								4		10		11		16
							6		13		14		20		23
						9		17		18		25		28		35
					12		21		22		30		33		41		46
				15		26		27		36		39		48		53		62
			19		31		32		42		45		55		60		70		77
		24		37		38		49		52		63		68		79		86		97
	29		43		44		56		59		71		76		88		95		107		116

A272908 as a square array

1	2	3	4	6	9	12	15	19	24	29
5	7	10	13	17	21	26	31	37	43
8	11	14	18	22	27	32	38	44
16	20	25	30	36	42	49	56
23	28	33	39	45	52	59
35	41	48	55	63	71
46	53	60	68	76
62	70	79	88
77	86	95
97	107
116

A272908 as an upper right triangle

1	2	3	4	6	9	12	15	19	24	29
	5	7	10	13	17	21	26	31	37	43
		8	11	14	18	22	27	32	38	44
			16	20	25	30	36	42	49	56
				23	28	33	39	45	52	59
					35	41	48	55	63	71
						46	53	60	68	76
							62	70	79	88
								77	86	95
									97	107
										116