A019140 - OEIS

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A019140 as a simple table

`n`		`a(n)`
`3`		`1`
`4`		`1`
`5`		`0`
`6`		`2`
`7`		`0`
`8`		`10`
`9`		`20`
`10`		`100`
`11`		`210`
`12`		`530`
`13`		`974`
`14`		`2548`
`15`		`5654`
`16`		`15378`
`17`		`37662`
`18`		`100702`
`19`		`248970`
`20`		`648082`
`21`		`1625344`
`22`		`4221578`
`23`		`10746294`
`24`		`27964310`
`25`		`72059274`
`26`		`188226426`
`27`		`488925522`
`28`		`1280741934`
`29`		`3346300256`
`30`		`8791335140`
`31`		`23076212174`
`32`		`60806053482`

[1,1,0,2,0,10,20,100,210,530,974,2548,5654,15378, 37662,100702,248970,648082,1625344,4221578, 10746294,27964310,72059274,188226426,488925522, 1280741934,3346300256,8791335140,23076212174, 60806053482]

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Last modified April 20 00:58 EDT 2024. Contains 371798 sequences. (Running on oeis4.)