A017772 - OEIS

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A017772 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`56`
`2`		`1540`
`3`		`27720`
`4`		`367290`
`5`		`3819816`
`6`		`32468436`
`7`		`231917400`
`8`		`1420494075`
`9`		`7575968400`
`10`		`35607051480`
`11`		`148902215280`
`12`		`558383307300`
`13`		`1889912732400`
`14`		`5804731963800`
`15`		`16253249498640`
`16`		`41648951840265`
`17`		`97997533741800`
`18`		`212327989773900`
`19`		`424655979547800`
`20`		`785613562163430`

[1,56,1540,27720,367290,3819816,32468436, 231917400,1420494075,7575968400,35607051480, 148902215280,558383307300,1889912732400, 5804731963800,16253249498640,41648951840265, 97997533741800,212327989773900,424655979547800, 785613562163430]

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Last modified August 26 17:36 EDT 2024. Contains 375462 sequences. (Running on oeis4.)