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A010538
Decimal expansion of square root of 87.
6
9, 3, 2, 7, 3, 7, 9, 0, 5, 3, 0, 8, 8, 8, 1, 5, 0, 4, 5, 5, 5, 4, 4, 7, 5, 5, 4, 2, 3, 2, 0, 5, 5, 6, 9, 8, 3, 2, 7, 6, 2, 4, 0, 6, 9, 4, 1, 9, 1, 6, 5, 4, 6, 7, 1, 0, 5, 6, 1, 9, 7, 2, 9, 8, 4, 4, 6, 7, 8, 4, 5, 4, 8, 8, 0, 7, 2, 4, 9, 6, 7, 8, 4, 1, 4, 2, 2, 0, 5, 6, 2, 9, 1, 1, 8, 8, 2, 0, 1
OFFSET
1,1
COMMENTS
Continued fraction expansion is 9 followed by {3, 18} repeated. - Harry J. Smith, Jun 10 2009
LINKS
FORMULA
Equals A002194 * A010484. - R. J. Mathar, Jun 08 2020
EXAMPLE
9.3273790530888150455544755423205569832762406... - Harry J. Smith, Jun 10 2009
MATHEMATICA
RealDigits[N[87^(1/2), 200]][[1]] (* Vladimir Joseph Stephan Orlovsky, Jan 23 2012 *)
PROG
(Python)
from math import isqrt
def aupton(nn): return list(map(int, str(isqrt(87 * 10**(2*nn)))))[:nn]
print(aupton(100)) # Michael S. Branicky, Sep 03 2021
CROSSREFS
Cf. A040077 (continued fraction). - Harry J. Smith, Jun 10 2009
Sequence in context: A200624 A105171 A369880 * A216102 A019721 A265162
KEYWORD
nonn,cons
STATUS
approved