Toothpick primes: primes in the toothpick sequence A139250.

Terms

a(0) =3a(1) =7a(2) =11a(3) =23a(4) =43a(5) =47a(6) =67a(7) =79a(8) =223a(9) =251a(10) =283a(11) =347a(12) =383a(13) =571a(14) =683a(15) =719a(16) =859a(17) =1163a(18) =1279a(19) =1319a(20) =1607a(21) =1667a(22) =1759a(23) =1871a(24) =2011a(25) =2731a(26) =2767a(27) =2843a(28) =2879a(29) =3919