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A157034
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Shorthand for A157033, the smallest prime with 2^n digits.
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4
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1, 1, 9, 19, 37, 33, 121, 283, 37, 241, 3259, 2823, 67017, 13989, 9523, 34281
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OFFSET
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0,3
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LINKS
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Table of n, a(n) for n=0..15.
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FORMULA
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a(n) = A157033(n) - 10^(2^n - 1).
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MAPLE
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a:= n-> (t-> nextprime(t)-t)(10^(2^n-1)):
seq(a(n), n=0..10); # Alois P. Heinz, Mar 02 2022
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MATHEMATICA
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f[n_] := NextPrime[ 10^(2^n-1)] - 10^(2^n-1); Table[ f@n, {n, 0, 12}] (* Robert G. Wilson v, Mar 17 2009 *)
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PROG
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from sympy import nextprime
def A157034(n): return 1 if n == 0 else nextprime(10**(2**n-1))-10**(2**n-1) # Chai Wah Wu, Apr 16 2021
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CROSSREFS
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Cf. A033873, A157033, A157036.
Sequence in context: A051811 A034056 A195042 * A198590 A297396 A145958
Adjacent sequences: A157031 A157032 A157033 * A157035 A157036 A157037
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KEYWORD
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nonn,base,more
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AUTHOR
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Lekraj Beedassy, Feb 22 2009
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EXTENSIONS
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a(8)-a(12) from Robert G. Wilson v, Mar 17 2009
a(13)-a(14) from Ray Chandler, Mar 22 2009
a(15) from Jinyuan Wang, Feb 24 2022
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STATUS
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approved
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