A061915 as tables, graphs or sounds

A061915 formatted as a simple table:

`n`		`a(n)`
`0`		`0`
`1`		`2`
`2`		`2`
`3`		`6`
`4`		`4`
`5`		`-1`
`6`		`6`
`7`		`686`
`8`		`8`
`9`		`666`
`10`		`2`
`11`		`22`
`12`		`444`
`13`		`2002`
`14`		`686`
`15`		`-1`
`16`		`464`
`17`		`646`
`18`		`666`
`19`		`646`
`20`		`2`
`21`		`6006`
`22`		`22`
`23`		`828`
`24`		`888`
`25`		`-1`
`26`		`2002`
`27`		`8886888`
`28`		`868`
`29`		`464`
`30`		`6`
`31`		`868`
`32`		`4224`
`33`		`66`
`34`		`646`
`35`		`-1`
`36`		`828`
`37`		`222`
`38`		`646`
`39`		`6006`
`40`		`4`
`41`		`22222`
`42`		`6006`
`43`		`68886`
`44`		`44`
`45`		`-1`
`46`		`828`
`47`		`282`
`48`		`4224`
`49`		`686`
`50`		`-1`
`51`		`42024`
`52`		`4004`
`53`		`424`
`54`		`8886888`
`55`		`-1`
`56`		`8008`
`57`		`68286`
`58`		`464`
`59`		`68086`
`60`		`6`

[0,2,2,6,4,-1,6,686,8,666,2,22,444,2002,686,-1, 464,646,666,646,2,6006,22,828,888,-1,2002,8886888, 868,464,6,868,4224,66,646,-1,828,222,646,6006,4, 22222,6006,68886,44,-1,828,282,4224,686,-1,42024, 4004,424,8886888,-1,8008,68286,464,68086,6]

Last modified November 24 23:16 EST 2009. Contains 167481 sequences.

AT&T Labs Research