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A060998
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Squares of 1 and primes, written backwards.
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1
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1, 4, 9, 52, 94, 121, 961, 982, 163, 925, 148, 169, 9631, 1861, 9481, 9022, 9082, 1843, 1273, 9844, 1405, 9235, 1426, 9886, 1297, 9049, 10201, 90601, 94411, 18811, 96721, 92161, 16171, 96781, 12391, 10222, 10822, 94642, 96562, 98872, 92992, 14023
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OFFSET
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1,2
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COMMENTS
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LINKS
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MAPLE
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revdigs := proc(n)
local L, nL, j;
L:= convert(n, base, 10);
nL:= nops(L);
add(L[i]*10^(nL-i), i=1..nL);
end:
map(t -> revdigs(t^2), [1, 2, op(select(isprime, [seq(i, i=3..10^4, 2)]))]); # Robert Israel, Nov 20 2015
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MATHEMATICA
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Join[{1}, FromDigits[Reverse[IntegerDigits[#^2]]]&/@Prime[Range[100]]] (* Vincenzo Librandi, Nov 20 2015 *)
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PROG
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(PARI) a(n) = if(n==1, 1, eval(concat(Vecrev(Str(prime(n-1)^2))))) \\ Altug Alkan, Nov 20 2015
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CROSSREFS
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KEYWORD
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nonn,base,easy
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AUTHOR
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Martin Goepfert (martin.goepfert(AT)fen-net.de), May 14 2001
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EXTENSIONS
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More terms from Larry Reeves (larryr(AT)acm.org), May 15 2001
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STATUS
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approved
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