A161680 - OEIS

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A161680 as a simple table

`n`		`a(n)`
`0`		`0`
`1`		`0`
`2`		`1`
`3`		`3`
`4`		`6`
`5`		`10`
`6`		`15`
`7`		`21`
`8`		`28`
`9`		`36`
`10`		`45`
`11`		`55`
`12`		`66`
`13`		`78`
`14`		`91`
`15`		`105`
`16`		`120`
`17`		`136`
`18`		`153`
`19`		`171`
`20`		`190`
`21`		`210`
`22`		`231`
`23`		`253`
`24`		`276`
`25`		`300`
`26`		`325`
`27`		`351`
`28`		`378`
`29`		`406`
`30`		`435`
`31`		`465`
`32`		`496`
`33`		`528`
`34`		`561`
`35`		`595`
`36`		`630`
`37`		`666`
`38`		`703`
`39`		`741`
`40`		`780`
`41`		`820`
`42`		`861`
`43`		`903`
`44`		`946`
`45`		`990`
`46`		`1035`
`47`		`1081`
`48`		`1128`
`49`		`1176`
`50`		`1225`
`51`		`1275`
`52`		`1326`
`53`		`1378`

[0,0,1,3,6,10,15,21,28,36,45,55,66,78,91,105,120, 136,153,171,190,210,231,253,276,300,325,351,378, 406,435,465,496,528,561,595,630,666,703,741,780, 820,861,903,946,990,1035,1081,1128,1176,1225,1275, 1326,1378]

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Last modified April 19 17:49 EDT 2024. Contains 371797 sequences. (Running on oeis4.)