A026589 - OEIS

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A026589 as a simple table

`n`		`a(n)`
`4`		`1`
`5`		`2`
`6`		`9`
`7`		`22`
`8`		`69`
`9`		`178`
`10`		`497`
`11`		`1294`
`12`		`3452`
`13`		`8964`
`14`		`23430`
`15`		`60556`
`16`		`156663`
`17`		`403214`
`18`		`1037191`
`19`		`2660978`
`20`		`6821200`
`21`		`17459732`
`22`		`44657246`
`23`		`114117628`
`24`		`291449047`
`25`		`743904326`
`26`		`1897956899`
`27`		`4840429962`
`28`		`12340947855`
`29`		`31455453822`
`30`		`80158533099`

[1,2,9,22,69,178,497,1294,3452,8964,23430,60556, 156663,403214,1037191,2660978,6821200,17459732, 44657246,114117628,291449047,743904326,1897956899, 4840429962,12340947855,31455453822,80158533099]

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Last modified April 19 13:40 EDT 2024. Contains 371792 sequences. (Running on oeis4.)