A025731 - OEIS

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A025731 as a simple table

`n`		`a(n)`
`1`		`1`
`2`		`3`
`3`		`6`
`4`		`10`
`5`		`15`
`6`		`21`
`7`		`28`
`8`		`36`
`9`		`45`
`10`		`55`
`11`		`66`
`12`		`78`
`13`		`91`
`14`		`105`
`15`		`120`
`16`		`137`
`17`		`155`
`18`		`174`
`19`		`194`
`20`		`215`
`21`		`237`
`22`		`260`
`23`		`284`
`24`		`309`
`25`		`335`
`26`		`362`
`27`		`390`
`28`		`419`
`29`		`449`
`30`		`480`
`31`		`513`
`32`		`547`
`33`		`582`
`34`		`618`
`35`		`655`
`36`		`693`
`37`		`732`
`38`		`772`
`39`		`813`
`40`		`855`
`41`		`898`
`42`		`942`
`43`		`987`
`44`		`1033`
`45`		`1081`
`46`		`1130`
`47`		`1180`
`48`		`1231`
`49`		`1283`
`50`		`1336`
`51`		`1390`
`52`		`1445`
`53`		`1501`
`54`		`1558`
`55`		`1616`

[1,3,6,10,15,21,28,36,45,55,66,78,91,105,120,137, 155,174,194,215,237,260,284,309,335,362,390,419, 449,480,513,547,582,618,655,693,732,772,813,855, 898,942,987,1033,1081,1130,1180,1231,1283,1336, 1390,1445,1501,1558,1616]

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Last modified April 24 18:05 EDT 2024. Contains 371962 sequences. (Running on oeis4.)