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A034057 Decimal part of a(n)^(1/2) starts with n (squares excluded). 7
26, 10, 5, 11, 2, 21, 7, 3, 8, 35, 199, 83, 17, 124, 51, 173, 10, 201, 67, 27, 149, 52, 126, 5, 18, 541, 127, 86, 53, 28, 69, 11, 40, 336, 54, 19, 70, 179, 29, 108, 41, 2, 71, 89, 6, 181, 12, 20, 42, 182, 1407, 381, 157, 91, 57, 43, 31, 134, 21, 92, 13, 58 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,1

LINKS

Paul Tek, Table of n, a(n) for n = 0..10000

Paul Tek, PARI program for this sequence

EXAMPLE

a(0)=26 -> 26^(1/2)=5.{0}990195...

a(1)=10 -> 10^(1/2)=3.{1}622776...

PROG

(Python)

from math import sqrt

def a(n):

  k, s, pow10 = 3, sqrt(2), 10**len(str(n))

  while int(pow10*(s-int(s))) != n: k, s = k+1, sqrt(k)

  return k-1

print([a(n) for n in range(1, 67)]) # Michael S. Branicky, Mar 15 2021

CROSSREFS

Cf. A034067, A034077.

Sequence in context: A163989 A034077 A040654 * A070715 A317105 A033346

Adjacent sequences:  A034054 A034055 A034056 * A034058 A034059 A034060

KEYWORD

nonn,base,look

AUTHOR

Patrick De Geest, Sep 15 1998

EXTENSIONS

Title corrected by Sean A. Irvine, Aug 02 2020

STATUS

approved

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Last modified September 23 12:06 EDT 2021. Contains 347616 sequences. (Running on oeis4.)