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A035070 a(n) is root of square starting with digit 3: first term of runs. 3
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 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
FORMULA
a(n) = ceiling(sqrt(3*10^n)).
MATHEMATICA
Table[Ceiling @ Sqrt[3 * 10^n], {n, 1, 24}] (* Amiram Eldar, Oct 08 2019 *)
PROG
(Python)
from math import isqrt
def a(n): return isqrt(3*10**n) + 1
print([a(n) for n in range(1, 28)]) # Michael S. Branicky, Jun 18 2021
CROSSREFS
Cf. A067473 (squares), A035076 (2..9).
Sequence in context: A183913 A056349 A278768 * A075386 A056343 A363517
KEYWORD
nonn,base
AUTHOR
Patrick De Geest, Nov 15 1998
EXTENSIONS
Offset 1 from Alois P. Heinz, Oct 08 2019
STATUS
approved

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Last modified June 22 08:18 EDT 2024. Contains 373567 sequences. (Running on oeis4.)