Least nonnegative number greater than the previous number which is simultaneously an n-gonal and (n+1)-gonal number.

A342300

Least nonnegative number greater than the previous number which is simultaneously an n-gonal and (n+1)-gonal number.

Terms

    a(0) =0a(1) =1a(2) =3a(3) =36a(4) =9801a(5) =40755a(6) =121771a(7) =297045a(8) =631125a(9) =1212751a(10) =2158695a(11) =3617601a(12) =5773825a(13) =8851275a(14) =13117251a(15) =18886285a(16) =26523981a(17) =36450855a(18) =49146175a(19) =65151801a(20) =85076025a(21) =109597411a(22) =139468635a(23) =175520325a(24) =218664901a(25) =269900415a(26) =330314391a(27) =401087665a(28) =483498225a(29) =578925051

External references