A257180 - OEIS

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A257180 as a triangular array

1

3 3

9 24 9

27 141 141 27

81 726 1410 726 81

243 3471 11406 11406 3471 243

729 15828 81327 136872 81327 15828 729

2187 69873 533259 1390521 1390521 533259 69873 2187

6561 301362 3295152 12609198 19467294 12609198 3295152 301362 6561

19683 1277619 19489380 105311556 237144642 237144642 105311556 19489380 1277619 19683

A257180 as a square array

`1`	`3`	`9`	`27`	`81`	`243`	`729`	`2187`	`6561`	`19683`
`3`	`24`	`141`	`726`	`3471`	`15828`	`69873`	`301362`	`1277619`
`9`	`141`	`1410`	`11406`	`81327`	`533259`	`3295152`	`19489380`
`27`	`726`	`11406`	`136872`	`1390521`	`12609198`	`105311556`
`81`	`3471`	`81327`	`1390521`	`19467294`	`237144642`
`243`	`15828`	`533259`	`12609198`	`237144642`
`729`	`69873`	`3295152`	`105311556`
`2187`	`301362`	`19489380`
`6561`	`1277619`
`19683`

A257180 as an upper right triangle

`1`	`3`	`9`	`27`	`81`	`243`	`729`	`2187`	`6561`	`19683`
	`3`	`24`	`141`	`726`	`3471`	`15828`	`69873`	`301362`	`1277619`
		`9`	`141`	`1410`	`11406`	`81327`	`533259`	`3295152`	`19489380`
			`27`	`726`	`11406`	`136872`	`1390521`	`12609198`	`105311556`
				`81`	`3471`	`81327`	`1390521`	`19467294`	`237144642`
					`243`	`15828`	`533259`	`12609198`	`237144642`
						`729`	`69873`	`3295152`	`105311556`
							`2187`	`301362`	`19489380`
								`6561`	`1277619`
									`19683`

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Last modified April 16 10:37 EDT 2024. Contains 371709 sequences. (Running on oeis4.)