Partial sums of Proth primes A080076.

Terms

a(0) =3a(1) =8a(2) =21a(3) =38a(4) =79a(5) =176a(6) =289a(7) =482a(8) =723a(9) =980a(10) =1333a(11) =1782a(12) =2359a(13) =3000a(14) =3673a(15) =4442a(16) =5371a(17) =6524a(18) =7741a(19) =9150a(20) =10751a(21) =12864a(22) =15553a(23) =18306a(24) =21443a(25) =24772a(26) =28229a(27) =32710a(28) =37703a(29) =44232