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 A322444 Primes that are not base-8 deletable primes (written in base 10). 1
 71, 73, 79, 97, 103, 113, 127, 149, 173, 193, 227, 241, 257, 263, 271, 281, 283, 307, 311, 313, 409, 419, 433, 439, 449, 457, 463, 487, 503, 521, 569, 577, 587, 593, 599, 607, 617, 631, 641, 647, 653, 661, 673, 701, 727, 733, 739, 743, 757, 769, 823, 827, 839, 881, 887, 907, 911, 919, 929 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS A prime p is a base-b deletable prime if when written in base b it has the property that removing some digit leaves either the empty string or another deletable prime. Deleting a digit cannot leave any leading zeros in the new string. For example, deleting the 2 in 2003 to obtain 003 is not allowed. Complement of all primes and A322443 . LINKS Robert Price, Table of n, a(n) for n = 1..660 MATHEMATICA b = 8; d = {}; p = Select[Range[2, 10000], PrimeQ[#] &]; For[i = 1, i <= Length[p], i++, c = IntegerDigits[p[[i]], b]; If[Length[c] == 1, AppendTo[d, p[[i]]]; Continue[]]; For[j = 1, j <= Length[c], j++, t = Delete[c, j]; If[t[[1]] == 0, Continue[]]; If[MemberQ[d, FromDigits[t, b]], AppendTo[d, p[[i]]]; Break[]]]]; Complement[Table[Prime[n], {n, PrimePi[Last[d]]}], d] (* Robert Price, Dec 08 2018 *) CROSSREFS Cf. A080608, A080603, A096235-A096246, A321657. Sequence in context: A104843 A322831 A127316 * A339700 A217414 A159025 Adjacent sequences:  A322441 A322442 A322443 * A322445 A322446 A322447 KEYWORD nonn,base,easy AUTHOR Robert Price, Dec 08 2018 STATUS approved

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Last modified April 16 12:25 EDT 2021. Contains 343037 sequences. (Running on oeis4.)