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A035070
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a(n) is root of square starting with digit 3: first term of runs.
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3
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6, 18, 55, 174, 548, 1733, 5478, 17321, 54773, 173206, 547723, 1732051, 5477226, 17320509, 54772256, 173205081, 547722558, 1732050808, 5477225576, 17320508076, 54772255751, 173205080757, 547722557506, 1732050807569, 5477225575052, 17320508075689, 54772255750517
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OFFSET
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1,1
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LINKS
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FORMULA
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a(n) = ceiling(sqrt(3*10^n)).
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MATHEMATICA
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Table[Ceiling @ Sqrt[3 * 10^n], {n, 1, 24}] (* Amiram Eldar, Oct 08 2019 *)
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PROG
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(Python)
from math import isqrt
def a(n): return isqrt(3*10**n) + 1
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CROSSREFS
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KEYWORD
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nonn,base
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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