Binomial transform of odd primes.

Terms

a(0) =3a(1) =8a(2) =20a(3) =50a(4) =122a(5) =290a(6) =674a(7) =1538a(8) =3462a(9) =7720a(10) =17104a(11) =37708a(12) =82768a(13) =180880a(14) =393488a(15) =851914a(16) =1835470a(17) =3935808a(18) =8402158a(19) =17865738a(20) =37858268a(21) =79991512a(22) =168605710a(23) =354649382a(24) =744605426a(25) =1560666296a(26) =3265699888a(27) =6822355756a(28) =14229565634