Primes having only {1, 4, 6, 8} as digits.

Terms

a(0) =11a(1) =41a(2) =61a(3) =181a(4) =461a(5) =641a(6) =661a(7) =811a(8) =881a(9) =1181a(10) =1481a(11) =1811a(12) =1861a(13) =4111a(14) =4441a(15) =4481a(16) =4861a(17) =6481a(18) =6661a(19) =6841a(20) =8111a(21) =8161a(22) =8461a(23) =8641a(24) =8681a(25) =8861a(26) =11161a(27) =11411a(28) =11681a(29) =14411