A001875 - OEIS

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A001875 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`7`
`2`		`35`
`3`		`140`
`4`		`490`
`5`		`1554`
`6`		`4578`
`7`		`12720`
`8`		`33705`
`9`		`85855`
`10`		`211519`
`11`		`506408`
`12`		`1182650`
`13`		`2702350`
`14`		`6056850`
`15`		`13343820`
`16`		`28947240`
`17`		`61926900`
`18`		`130814600`
`19`		`273163100`
`20`		`564415390`
`21`		`1154933230`
`22`		`2342193350`
`23`		`4710707400`
`24`		`9401674275`
`25`		`18629923053`
`26`		`36670044621`
`27`		`71728832280`
`28`		`139485074370`

[1,7,35,140,490,1554,4578,12720,33705,85855, 211519,506408,1182650,2702350,6056850,13343820, 28947240,61926900,130814600,273163100,564415390, 1154933230,2342193350,4710707400,9401674275, 18629923053,36670044621,71728832280,139485074370]

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Last modified April 19 02:25 EDT 2024. Contains 371782 sequences. (Running on oeis4.)