a(n) = 529*n^2 + 23.

Terms

a(0) =23a(1) =552a(2) =2139a(3) =4784a(4) =8487a(5) =13248a(6) =19067a(7) =25944a(8) =33879a(9) =42872a(10) =52923a(11) =64032a(12) =76199a(13) =89424a(14) =103707a(15) =119048a(16) =135447a(17) =152904a(18) =171419a(19) =190992a(20) =211623a(21) =233312a(22) =256059a(23) =279864a(24) =304727a(25) =330648a(26) =357627a(27) =385664a(28) =414759a(29) =444912