A166021 - OEIS

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A166021 as a triangular array

											2
										4		5
									8		9		10
								14		15		16		17
							22		23		24		25		26
						32		33		34		35		36		37
					44		45		46		47		48		49		50
				58		59		60		61		62		63		64		65
			74		75		76		77		78		79		80		81		82
		92		93		94		95		96		97		98		99		100		101
	112		113		114		115		116		117		118		119		120		121

A166021 as a square array

2	4	8	14	22	32	44	58	74	92	112
5	9	15	23	33	45	59	75	93	113
10	16	24	34	46	60	76	94	114
17	25	35	47	61	77	95	115
26	36	48	62	78	96	116
37	49	63	79	97	117
50	64	80	98	118
65	81	99	119
82	100	120
101	121

A166021 as an upper right triangle

2	4	8	14	22	32	44	58	74	92	112
	5	9	15	23	33	45	59	75	93	113
		10	16	24	34	46	60	76	94	114
			17	25	35	47	61	77	95	115
				26	36	48	62	78	96	116
					37	49	63	79	97	117
						50	64	80	98	118
							65	81	99	119
								82	100	120
									101	121