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A004087
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Primes written backwards.
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34
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2, 3, 5, 7, 11, 31, 71, 91, 32, 92, 13, 73, 14, 34, 74, 35, 95, 16, 76, 17, 37, 97, 38, 98, 79, 101, 301, 701, 901, 311, 721, 131, 731, 931, 941, 151, 751, 361, 761, 371, 971, 181, 191, 391, 791, 991, 112, 322, 722, 922, 332, 932, 142, 152, 752, 362, 962, 172
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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LINKS
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R. Zumkeller, Table of n, a(n) for n = 1..10000
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FORMULA
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a(n) = A004086(A000040(n)) = A000040(n) - A068396(n). - N. J. A. Sloane, Jun 29 2008
a(n) = A188649(A000040(n)). - Reinhard Zumkeller, Apr 11 2011
a(n) = A071786(A000040(n)). - Reinhard Zumkeller, Oct 14 2011
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MATHEMATICA
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FromDigits[Reverse[IntegerDigits[#]]]&/@Prime[Range[100]] (* Vincenzo Librandi, Jul 05 2015 *)
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PROG
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(Haskell)
a004087 n = a004087_list !! (n-1)
a004087_list = map a004086 a000040_list
-- Reinhard Zumkeller, Oct 14 2011
(Magma) [Seqint(Reverse(Intseq(NthPrime(n)))): n in [1..60]]; // Vincenzo Librandi, Jan 21 2016
(Python)
from sympy import primerange
print([int(str(p)[::-1]) for p in primerange(2, 272)]) # Michael S. Branicky, Jun 24 2022
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CROSSREFS
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Cf. A000040.
Sequence in context: A101989 A098922 A265324 * A118495 A028906 A118496
Adjacent sequences: A004084 A004085 A004086 * A004088 A004089 A004090
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KEYWORD
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nonn,base,look,changed
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AUTHOR
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N. J. A. Sloane
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EXTENSIONS
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More terms from Eric M. Schmidt, Apr 04 2014
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STATUS
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approved
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