A218581 - OEIS

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A218581 as a triangular array

1

0 2

0 1 4

0 1 4 10

0 1 6 15 31

0 1 10 29 62 115

0 1 18 63 148 288 496

0 1 34 149 392 826 1496 2437

0 1 66 375 1120 2592 5036 8615 13435

0 1 130 989 3392 8698 18332 33391 54548 82127

A218581 as a square array

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
`2`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
`4`	`4`	`6`	`10`	`18`	`34`	`66`	`130`
`10`	`15`	`29`	`63`	`149`	`375`	`989`
`31`	`62`	`148`	`392`	`1120`	`3392`
`115`	`288`	`826`	`2592`	`8698`
`496`	`1496`	`5036`	`18332`
`2437`	`8615`	`33391`
`13435`	`54548`
`82127`

A218581 as an upper right triangle

`1`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`	`0`
	`2`	`1`	`1`	`1`	`1`	`1`	`1`	`1`	`1`
		`4`	`4`	`6`	`10`	`18`	`34`	`66`	`130`
			`10`	`15`	`29`	`63`	`149`	`375`	`989`
				`31`	`62`	`148`	`392`	`1120`	`3392`
					`115`	`288`	`826`	`2592`	`8698`
						`496`	`1496`	`5036`	`18332`
							`2437`	`8615`	`33391`
								`13435`	`54548`
									`82127`

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Last modified April 25 07:41 EDT 2024. Contains 371964 sequences. (Running on oeis4.)