A027020 - OEIS

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A027020 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`3`
`3`		`4`
`4`		`7`
`5`		`15`
`6`		`28`
`7`		`47`
`8`		`98`
`9`		`199`
`10`		`373`
`11`		`661`
`12`		`1404`
`13`		`2801`
`14`		`5283`
`15`		`9859`
`16`		`20495`
`17`		`40615`
`18`		`77040`
`19`		`147760`
`20`		`303553`
`21`		`599801`
`22`		`1143134`
`23`		`2228414`
`24`		`4544731`
`25`		`8968421`
`26`		`17160232`
`27`		`33801192`
`28`		`68602923`
`29`		`135308317`
`30`		`259763268`
`31`		`515250948`
`32`		`1042217402`
`33`		`2055373383`

[1,3,4,7,15,28,47,98,199,373,661,1404,2801,5283, 9859,20495,40615,77040,147760,303553,599801, 1143134,2228414,4544731,8968421,17160232,33801192, 68602923,135308317,259763268,515250948,1042217402, 2055373383]

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Last modified April 18 16:22 EDT 2024. Contains 371780 sequences. (Running on oeis4.)