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A329194
a(n) = floor(log_3(n^2)) = floor(2 log_3(n))
3
0, 1, 2, 2, 2, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8
OFFSET
1,3
FORMULA
2*A062153(n) <= a(n) = floor(log_3(n^2)) = A062153(A000290(n)).
PROG
(PARI) apply( A329194(n)=logint(n^2, 3), [1..99])
CROSSREFS
Cf. A000290 (n^2), A062153 (log_3), A329202 (log_2(n^2)), A329193 (log_2(n^3)).
Sequence in context: A361928 A300013 A130535 * A375499 A210533 A246435
KEYWORD
nonn
AUTHOR
M. F. Hasler, Nov 07 2019
STATUS
approved