A194903 - OEIS

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A194903 as a triangular array

												1
											3		2
										5		4		6
									9		7		10		8
								13		11		14		12		15
							19		16		20		17		21		18
						25		22		26		23		27		24		28
					33		29		34		30		35		31		36		32
				41		37		42		38		43		39		44		40		45
			51		46		52		47		53		48		54		49		55		50
		61		56		62		57		63		58		64		59		65		60		66
	73		67		74

A194903 as a square array

1	3	5	9	13	19	25	33	41	51	61	73
2	4	7	11	16	22	29	37	46	56	67
6	10	14	20	26	34	42	52	62	74
8	12	17	23	30	38	47	57
15	21	27	35	43	53	63
18	24	31	39	48	58
28	36	44	54	64
32	40	49	59
45	55	65
50	60
66

A194903 as an upper right triangle

1	3	5	9	13	19	25	33	41	51	61	73
	2	4	7	11	16	22	29	37	46	56	67
		6	10	14	20	26	34	42	52	62	74
			8	12	17	23	30	38	47	57
				15	21	27	35	43	53	63
					18	24	31	39	48	58
						28	36	44	54	64
							32	40	49	59
								45	55	65
									50	60
										66