A329194 -id:A329194 - cp's OEIS frontend

A329195 a(n) = floor(log_5(n^2)) = floor(2 log_5(n)).

0, 0, 1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5

Offset: 1

M. F. Hasler, Nov 07 2019

nonn

Cf. A000290 (n^2), A062153 (log_3), A329202 (log_2(n^2)), A329193 (log_2(n^3)), A329194 (log_3(n^2)).

Table[Floor[2Log[5,n]],{n,100}] (* Harvey P. Dale, Dec 14 2021 *)

apply( A329195(n)=logint(n^2,5), [1..99])

A329199 a(n) = round(log_3(n)).

Original entry on oeis.org

0, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4

Offset: 1

M. F. Hasler, Nov 07 2019

nonn

Cf. A062153 (floor log_3), A000523 (floor log_2), A004257 (round log_2), A029837 (ceiling log_2), A329194 (log_3(n^2)).

Round[Log[3,Range[100]]] (* Harvey P. Dale, Sep 06 2022 *)

apply( A329199(n)=log(n)\/log(3), [1..130])

cp's OEIS Frontend

A329195 a(n) = floor(log_5(n^2)) = floor(2 log_5(n)).

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