A033453 - OEIS

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A033453 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`5`
`2`		`18`
`3`		`63`
`4`		`221`
`5`		`776`
`6`		`2725`
`7`		`9569`
`8`		`33602`
`9`		`117995`
`10`		`414345`
`11`		`1454992`
`12`		`5109273`
`13`		`17941453`
`14`		`63002258`
`15`		`221235399`
`16`		`776878533`
`17`		`2728045592`
`18`		`9579660701`
`19`		`33639430153`
`20`		`118126444802`
`21`		`414806579603`
`22`		`1456612858961`
`23`		`5114964721440`
`24`		`17961439747441`
`25`		`63072442405845`
`26`		`221481854849938`
`27`		`777743974335503`
`28`		`2731084630047981`

[1,5,18,63,221,776,2725,9569,33602,117995,414345, 1454992,5109273,17941453,63002258,221235399, 776878533,2728045592,9579660701,33639430153, 118126444802,414806579603,1456612858961, 5114964721440,17961439747441,63072442405845, 221481854849938,777743974335503,2731084630047981]

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Last modified April 19 21:09 EDT 2024. Contains 371798 sequences. (Running on oeis4.)