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A065145
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Smallest prime that begins with the n-th square in decimal notation.
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2
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11, 41, 97, 163, 251, 367, 491, 641, 811, 1009, 1213, 1447, 1693, 19603, 2251, 25601, 2897, 32401, 3613, 4001, 44101, 48407, 5297, 57601, 6257, 6761, 7297, 7841, 8419, 9001, 9613, 10243, 10891, 115601, 12251, 12967, 13691, 14447, 15217, 16001
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OFFSET
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1,1
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LINKS
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Robert Israel, Table of n, a(n) for n = 1..10000
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FORMULA
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a(n) = A030665(n^2). - Robert Israel, May 16 2018
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MAPLE
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f:= proc(n) local d, m, r;
for d from 1 do
for m from 1 to 10^d-1 by 2 do
r:= 10^d*n^2 + m;
if isprime(r) then return r fi
od od
end proc:
map(f, [$1..100]); # Robert Israel, May 16 2018
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CROSSREFS
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Cf. A030665, A062584, A000290, A000040, A065144.
Sequence in context: A097991 A158187 A239462 * A030685 A132208 A233434
Adjacent sequences: A065142 A065143 A065144 * A065146 A065147 A065148
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KEYWORD
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base,nonn
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AUTHOR
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Reinhard Zumkeller, Oct 17 2001
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STATUS
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approved
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