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A242038 Integer part of square root of A010809(n) = n^21. 1
0, 1, 1448, 102275, 2097152, 21836601, 148111277, 747359260, 3037000499, 10460353203, 31622776601, 86024705429, 214488041413, 497055861119, 1082291816449, 2233357359474, 4398046511104, 8312155792152, 15148209527700, 26724698233906 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Karl V. Keller, Jr., Table of n, a(n) for n = 0..1000

FORMULA

a(n) = floor(sqrt(n^21)).

EXAMPLE

For n = 4, floor(sqrt(4^21)) = 2097152.

PROG

(Python)

from decimal import *

getcontext().prec = 100

for n in range(0, 1001): print int(Decimal(n**21).sqrt())

(PARI) a(n) = sqrtint(n^21) \\ Michel Marcus, Oct 01 2014

CROSSREFS

Cf. A010809 (n^21).

Sequence in context: A023311 A318710 A208486 * A045099 A325883 A237445

Adjacent sequences:  A242035 A242036 A242037 * A242039 A242040 A242041

KEYWORD

nonn

AUTHOR

Karl V. Keller, Jr., Oct 01 2014

STATUS

approved

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Last modified July 22 20:51 EDT 2019. Contains 325226 sequences. (Running on oeis4.)