Partial sums of A299268.

Terms

a(0) =1a(1) =7a(2) =25a(3) =73a(4) =151a(5) =277a(6) =459a(7) =699a(8) =1029a(9) =1419a(10) =1941a(11) =2517a(12) =3275a(13) =4073a(14) =5111a(15) =6167a(16) =7529a(17) =8879a(18) =10609a(19) =12289a(20) =14431a(21) =16477a(22) =19075a(23) =21523a(24) =24621a(25) =27507a(26) =31149a(27) =34509a(28) =38739a(29) =42609