A026123 - OEIS

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A026123 as a simple table

`n`		`a(n)`
`2`		`1`
`3`		`4`
`4`		`10`
`5`		`28`
`6`		`76`
`7`		`209`
`8`		`575`
`9`		`1589`
`10`		`4405`
`11`		`12253`
`12`		`34189`
`13`		`95679`
`14`		`268503`
`15`		`755457`
`16`		`2130717`
`17`		`6023235`
`18`		`17063139`
`19`		`48434514`
`20`		`137741280`
`21`		`392407134`
`22`		`1119766942`
`23`		`3200326627`
`24`		`9160055809`
`25`		`26254474379`
`26`		`75348899051`
`27`		`216515177336`
`28`		`622887159274`

[1,4,10,28,76,209,575,1589,4405,12253,34189,95679, 268503,755457,2130717,6023235,17063139,48434514, 137741280,392407134,1119766942,3200326627, 9160055809,26254474379,75348899051,216515177336, 622887159274]

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Last modified April 24 15:52 EDT 2024. Contains 371961 sequences. (Running on oeis4.)