

A093337


Penultimate digits of the primes.


0



1, 1, 1, 1, 2, 2, 3, 3, 4, 4, 4, 5, 5, 6, 6, 7, 7, 7, 8, 8, 9, 0, 0, 0, 0, 1, 2, 3, 3, 3, 4, 5, 5, 6, 6, 7, 7, 8, 9, 9, 9, 9, 1, 2, 2, 2, 3, 3, 4, 5, 5, 6, 6, 7, 7, 8, 8, 9, 0, 1, 1, 1, 3, 3, 4, 4, 5, 5, 6, 7, 7, 8, 8, 9, 0, 0, 1, 2, 3, 3, 3, 4, 4, 5, 6, 6, 6, 7, 8, 9, 9, 0, 0, 2, 2, 4, 4, 5, 6, 6, 7, 7, 8, 9, 9
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OFFSET

11,5


LINKS



MATHEMATICA

IntegerDigits[#][[2]]&/@Prime[Range[5, 110]] (* Harvey P. Dale, Apr 08 2019 *)


PROG

(PARI) penult(n) = { forprime(x=11, n, s = Str(x); ln = length(s); pu = mid(s, ln1, 1); print1(pu", ") ) } \ Get a substring of length n from string str starting at position s in str. mid(str, s, n) = { v =""; tmp = Vec(str); ln=length(tmp); for(x=s, s+n1, v=concat(v, tmp[x]); ); return(v) }
(Magma) [Intseq(p)[2]: p in PrimesInInterval(11, 600)]; // Bruno Berselli, Feb 14 2013


CROSSREFS



KEYWORD

nonn,base


AUTHOR



STATUS

approved



