A218760 - OEIS

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A218760 as a simple table

`n`		`a(n)`
`1`		`4`
`2`		`18`
`3`		`90`
`4`		`403`
`5`		`1876`
`6`		`8697`
`7`		`40383`
`8`		`187413`
`9`		`869598`
`10`		`4035492`
`11`		`18727387`
`12`		`86907272`
`13`		`403304737`
`14`		`1871588753`
`15`		`8685363409`
`16`		`40305616278`
`17`		`187043701224`
`18`		`868001747571`
`19`		`4028080274884`
`20`		`18692855005565`
`21`		`86746738864403`
`22`		`402560052640421`

[4,18,90,403,1876,8697,40383,187413,869598, 4035492,18727387,86907272,403304737,1871588753, 8685363409,40305616278,187043701224,868001747571, 4028080274884,18692855005565,86746738864403, 402560052640421]

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Last modified April 19 09:23 EDT 2024. Contains 371782 sequences. (Running on oeis4.)