a(n) = sum of the first n primes whose distance to next prime is 4.

Terms

a(0) =7a(1) =20a(2) =39a(3) =76a(4) =119a(5) =186a(6) =265a(7) =362a(8) =465a(9) =574a(10) =701a(11) =864a(12) =1057a(13) =1280a(14) =1509a(15) =1786a(16) =2093a(17) =2406a(18) =2755a(19) =3134a(20) =3531a(21) =3970a(22) =4427a(23) =4890a(24) =5377a(25) =5876a(26) =6489a(27) =7132a(28) =7805a(29) =8544