Primes with digits in nonincreasing order.

Terms

a(0) =2a(1) =3a(2) =5a(3) =7a(4) =11a(5) =31a(6) =41a(7) =43a(8) =53a(9) =61a(10) =71a(11) =73a(12) =83a(13) =97a(14) =211a(15) =311a(16) =331a(17) =421a(18) =431a(19) =433a(20) =443a(21) =521a(22) =541a(23) =631a(24) =641a(25) =643a(26) =653a(27) =661a(28) =733a(29) =743