A228977 - OEIS

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A228977 as a triangular array

3

9 9

27 81 27

81 729 729 81

243 6387 19503 6387 243

729 55887 485397 485397 55887 729

2187 488037 11824875 32175213 11824875 488037 2187

6561 4259277 284888979 2056956837 2056956837 284888979 4259277 6561

A228977 as a square array

`3`	`9`	`27`	`81`	`243`	`729`	`2187`	`6561`
`9`	`81`	`729`	`6387`	`55887`	`488037`	`4259277`
`27`	`729`	`19503`	`485397`	`11824875`	`284888979`
`81`	`6387`	`485397`	`32175213`	`2056956837`
`243`	`55887`	`11824875`	`2056956837`
`729`	`488037`	`284888979`
`2187`	`4259277`
`6561`

A228977 as an upper right triangle

`3`	`9`	`27`	`81`	`243`	`729`	`2187`	`6561`
	`9`	`81`	`729`	`6387`	`55887`	`488037`	`4259277`
		`27`	`729`	`19503`	`485397`	`11824875`	`284888979`
			`81`	`6387`	`485397`	`32175213`	`2056956837`
				`243`	`55887`	`11824875`	`2056956837`
					`729`	`488037`	`284888979`
						`2187`	`4259277`
							`6561`

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Last modified April 24 12:22 EDT 2024. Contains 371937 sequences. (Running on oeis4.)