Partial sums of A045542.

Terms

a(0) =3a(1) =10a(2) =18a(3) =33a(4) =57a(5) =83a(6) =114a(7) =149a(8) =197a(9) =260a(10) =340a(11) =439a(12) =559a(13) =683a(14) =810a(15) =953a(16) =1121a(17) =1316a(18) =1531a(19) =1755a(20) =1997a(21) =2252a(22) =2540a(23) =2863a(24) =3205a(25) =3565a(26) =3964a(27) =4404a(28) =4887a(29) =5398