A042940 - OEIS

The OEIS is supported by the many generous donors to the OEIS Foundation.

A042940 as a simple table

`n`		`a(n)`
`0`		`1`
`1`		`18`
`2`		`197`
`3`		`1694`
`4`		`12586`
`5`		`84708`
`6`		`530733`
`7`		`3149542`
`8`		`17910398`
`9`		`98409532`
`10`		`525628194`
`11`		`2741723180`
`12`		`14015785460`
`13`		`70417793992`
`14`		`348499310973`
`15`		`1702076053686`
`16`		`8216326834550`
`17`		`39251274184780`
`18`		`185770424237398`
`19`		`871859230081092`

[1,18,197,1694,12586,84708,530733,3149542, 17910398,98409532,525628194,2741723180, 14015785460,70417793992,348499310973, 1702076053686,8216326834550,39251274184780, 185770424237398,871859230081092]

License Agreements, Terms of Use, Privacy Policy. .

Last modified July 30 05:15 EDT 2024. Contains 374734 sequences. (Running on oeis4.)