Convolution of odd primes with themselves.

Terms

a(0) =9a(1) =30a(2) =67a(3) =136a(4) =237a(5) =386a(6) =587a(7) =852a(8) =1213a(9) =1658a(10) =2227a(11) =2932a(12) =3765a(13) =4766a(14) =5939a(15) =7324a(16) =8917a(17) =10746a(18) =12851a(19) =15200a(20) =17845a(21) =20794a(22) =24083a(23) =27748a(24) =31785a(25) =36250a(26) =41107a(27) =46376a(28) =52113a(29) =58350