A220786 - OEIS

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A220786 as a triangular array

1

2 2

4 11 4

8 66 66 8

16 388 1197 388 16

32 2292 21551 21551 2292 32

64 13524 388159 1180735 388159 13524 64

128 79820 6991108 64833703 64833703 6991108 79820 128

256 471076 125915577 3558125814 10847110485

A220786 as a square array

`1`	`2`	`4`	`8`	`16`	`32`	`64`	`128`	`256`
`2`	`11`	`66`	`388`	`2292`	`13524`	`79820`	`471076`
`4`	`66`	`1197`	`21551`	`388159`	`6991108`	`125915577`
`8`	`388`	`21551`	`1180735`	`64833703`	`3558125814`
`16`	`2292`	`388159`	`64833703`	`10847110485`
`32`	`13524`	`6991108`
`64`	`79820`
`128`

A220786 as an upper right triangle

`1`	`2`	`4`	`8`	`16`	`32`	`64`	`128`	`256`
	`2`	`11`	`66`	`388`	`2292`	`13524`	`79820`	`471076`
		`4`	`66`	`1197`	`21551`	`388159`	`6991108`	`125915577`
			`8`	`388`	`21551`	`1180735`	`64833703`	`3558125814`
				`16`	`2292`	`388159`	`64833703`	`10847110485`
					`32`	`13524`	`6991108`
						`64`	`79820`
							`128`

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Last modified September 13 09:21 EDT 2024. Contains 375904 sequences. (Running on oeis4.)