A007405 - OEIS

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A007405 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`2`
`2`		`6`
`3`		`24`
`4`		`116`
`5`		`648`
`6`		`4088`
`7`		`28640`
`8`		`219920`
`9`		`1832224`
`10`		`16430176`
`11`		`157554048`
`12`		`1606879040`
`13`		`17350255744`
`14`		`197553645440`
`15`		`2363935624704`
`16`		`29638547505408`
`17`		`388328781668864`
`18`		`5304452565517824`
`19`		`75381218537805824`
`20`		`1112348880749130752`
`21`		`17014743624340539392`
`22`		`269360902955086379008`

[1,2,6,24,116,648,4088,28640,219920,1832224, 16430176,157554048,1606879040,17350255744, 197553645440,2363935624704,29638547505408, 388328781668864,5304452565517824, 75381218537805824,1112348880749130752, 17014743624340539392,269360902955086379008]

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Last modified April 23 05:09 EDT 2024. Contains 371906 sequences. (Running on oeis4.)