a(n) is the dot product of the vectors of the first n primes and the next n primes.

Terms

a(0) =6a(1) =31a(2) =112a(3) =279a(4) =652a(5) =1231a(6) =2140a(7) =3363a(8) =5132a(9) =7647a(10) =10600a(11) =14583a(12) =19754a(13) =25435a(14) =31894a(15) =40617a(16) =50866a(17) =62583a(18) =76174a(19) =91431a(20) =108124a(21) =127319a(22) =147868a(23) =172493a(24) =200392a(25) =230281a(26) =262140a(27) =297413a(28) =334756a(29) =374607