A257623 - OEIS

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A257623 as a triangular array

1

3 3

9 48 9

27 501 501 27

81 4494 13026 4494 81

243 37815 250230 250230 37815 243

729 309324 4122735 9008280 4122735 309324 729

2187 2498649 62256627 256971945 256971945 62256627 2498649 2187

A257623 as a square array

`1`	`3`	`9`	`27`	`81`	`243`	`729`	`2187`
`3`	`48`	`501`	`4494`	`37815`	`309324`	`2498649`
`9`	`501`	`13026`	`250230`	`4122735`	`62256627`
`27`	`4494`	`250230`	`9008280`	`256971945`
`81`	`37815`	`4122735`	`256971945`
`243`	`309324`	`62256627`
`729`	`2498649`
`2187`

A257623 as an upper right triangle

`1`	`3`	`9`	`27`	`81`	`243`	`729`	`2187`
	`3`	`48`	`501`	`4494`	`37815`	`309324`	`2498649`
		`9`	`501`	`13026`	`250230`	`4122735`	`62256627`
			`27`	`4494`	`250230`	`9008280`	`256971945`
				`81`	`37815`	`4122735`	`256971945`
					`243`	`309324`	`62256627`
						`729`	`2498649`
							`2187`

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Last modified April 23 08:33 EDT 2024. Contains 371905 sequences. (Running on oeis4.)