A221609 - OEIS

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A221609 as a triangular array

0

1 0

2 2 0

4 10 4 0

8 53 54 8 0

16 269 811 287 16 0

32 1378 11344 12270 1522 32 0

64 7057 160999 472974 184193 8072 64 0

128 36152 2286878 18561474 19521328 2764070 42810 128 0

256 185192 32522604

A221609 as a square array

`0`	`1`	`2`	`4`	`8`	`16`	`32`	`64`	`128`	`256`
`0`	`2`	`10`	`53`	`269`	`1378`	`7057`	`36152`	`185192`
`0`	`4`	`54`	`811`	`11344`	`160999`	`2286878`	`32522604`
`0`	`8`	`287`	`12270`	`472974`	`18561474`
`0`	`16`	`1522`	`184193`	`19521328`
`0`	`32`	`8072`	`2764070`
`0`	`64`	`42810`
`0`	`128`
`0`

A221609 as an upper right triangle

`0`	`1`	`2`	`4`	`8`	`16`	`32`	`64`	`128`	`256`
	`0`	`2`	`10`	`53`	`269`	`1378`	`7057`	`36152`	`185192`
		`0`	`4`	`54`	`811`	`11344`	`160999`	`2286878`	`32522604`
			`0`	`8`	`287`	`12270`	`472974`	`18561474`
				`0`	`16`	`1522`	`184193`	`19521328`
					`0`	`32`	`8072`	`2764070`
						`0`	`64`	`42810`
							`0`	`128`
								`0`

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Last modified April 19 23:15 EDT 2024. Contains 371798 sequences. (Running on oeis4.)