a(n+1) = a(n) + (if a(n) is odd then (next odd square) else (next even square)), a(0) = 1.

Terms

a(0) =1a(1) =10a(2) =14a(3) =30a(4) =66a(5) =130a(6) =230a(7) =374a(8) =570a(9) =826a(10) =1150a(11) =1550a(12) =2034a(13) =2610a(14) =3286a(15) =4070a(16) =4970a(17) =5994a(18) =7150a(19) =8446a(20) =9890a(21) =11490a(22) =13254a(23) =15190a(24) =17306a(25) =19610a(26) =22110a(27) =24814a(28) =27730a(29) =30866