A229521 - OEIS

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A229521 as a triangular array

3

7 7

17 33 17

39 129 129 39

91 481 775 481 91

211 1751 4193 4193 1751 211

491 6433 23059 34151 23059 6433 491

1141 23507 124431 275243 275243 124431 23507 1141

2653 86295 680991 2223913 3336437 2223913 680991

A229521 as a square array

`3`	`7`	`17`	`39`	`91`	`211`	`491`	`1141`	`2653`
`7`	`33`	`129`	`481`	`1751`	`6433`	`23507`	`86295`
`17`	`129`	`775`	`4193`	`23059`	`124431`	`680991`
`39`	`481`	`4193`	`34151`	`275243`	`2223913`
`91`	`1751`	`23059`	`275243`	`3336437`
`211`	`6433`	`124431`	`2223913`
`491`	`23507`	`680991`
`1141`

A229521 as an upper right triangle

`3`	`7`	`17`	`39`	`91`	`211`	`491`	`1141`	`2653`
	`7`	`33`	`129`	`481`	`1751`	`6433`	`23507`	`86295`
		`17`	`129`	`775`	`4193`	`23059`	`124431`	`680991`
			`39`	`481`	`4193`	`34151`	`275243`	`2223913`
				`91`	`1751`	`23059`	`275243`	`3336437`
					`211`	`6433`	`124431`	`2223913`
						`491`	`23507`	`680991`
							`1141`

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Last modified April 24 22:17 EDT 2024. Contains 371964 sequences. (Running on oeis4.)