A213418 - OEIS

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A213418 as a triangular array

										1
									2		2
								4		8		4
							8		32		32		8
						16		128		253		128		16
					32		512		1970		1970		512		32
				64		2048		15109		28952		15109		2048		64
			128		8192		114302		407498		407498		114302		8192		128
		256		32768		854473		5524088		10142461		5524088		854473		32768		256
	512		131072

A213418 as a square array

1	2	4	8	16	32	64	128	256	512
2	8	32	128	512	2048	8192	32768	131072
4	32	253	1970	15109	114302	854473
8	128	1970	28952	407498	5524088
16	512	15109	407498	10142461
32	2048	114302	5524088
64	8192	854473
128	32768
256

A213418 as an upper right triangle

1	2	4	8	16	32	64	128	256	512
	2	8	32	128	512	2048	8192	32768	131072
		4	32	253	1970	15109	114302	854473
			8	128	1970	28952	407498	5524088
				16	512	15109	407498	10142461
					32	2048	114302	5524088
						64	8192	854473
							128	32768
								256