A286847 - OEIS

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A286847 as a triangular array

1

2 2

2 6 2

4 7 7 4

4 18 16 18 4

7 39 53 53 39 7

9 75 154 306 154 75 9

13 155 436 1167 1167 436 155 13

18 310 1268 4939 6958 4939 1268 310 18

25 638 3660 21313 40931 40931 21313 3660 638 25

A286847 as a square array

`1`	`2`	`2`	`4`	`4`	`7`	`9`	`13`	`18`	`25`
`2`	`6`	`7`	`18`	`39`	`75`	`155`	`310`	`638`
`2`	`7`	`16`	`53`	`154`	`436`	`1268`	`3660`
`4`	`18`	`53`	`306`	`1167`	`4939`	`21313`
`4`	`39`	`154`	`1167`	`6958`	`40931`
`7`	`75`	`436`	`4939`	`40931`
`9`	`155`	`1268`	`21313`
`13`	`310`	`3660`
`18`	`638`
`25`

A286847 as an upper right triangle

`1`	`2`	`2`	`4`	`4`	`7`	`9`	`13`	`18`	`25`
	`2`	`6`	`7`	`18`	`39`	`75`	`155`	`310`	`638`
		`2`	`7`	`16`	`53`	`154`	`436`	`1268`	`3660`
			`4`	`18`	`53`	`306`	`1167`	`4939`	`21313`
				`4`	`39`	`154`	`1167`	`6958`	`40931`
					`7`	`75`	`436`	`4939`	`40931`
						`9`	`155`	`1268`	`21313`
							`13`	`310`	`3660`
								`18`	`638`
									`25`

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Last modified July 16 23:11 EDT 2024. Contains 374360 sequences. (Running on oeis4.)