A257791 - OEIS

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A257791 as a triangular array

										4
									8		12
								16		24		20
							32		48		40		28
						64		96		80		56		36
					128		192		160		112		72		44
				256		384		320		224		144		88		52
			512		768		640		448		288		176		104		60
		1024		1536		1280		896		576		352		208		120		68
	2048		3072		2560		1792		1152		704		416		240		136		76

A257791 as a square array

4	8	16	32	64	128	256	512	1024	2048
12	24	48	96	192	384	768	1536	3072
20	40	80	160	320	640	1280	2560
28	56	112	224	448	896	1792
36	72	144	288	576	1152
44	88	176	352	704
52	104	208	416
60	120	240
68	136
76

A257791 as an upper right triangle

4	8	16	32	64	128	256	512	1024	2048
	12	24	48	96	192	384	768	1536	3072
		20	40	80	160	320	640	1280	2560
			28	56	112	224	448	896	1792
				36	72	144	288	576	1152
					44	88	176	352	704
						52	104	208	416
							60	120	240
								68	136
									76