A077429 a(n) = floor(log_10(n^2)).

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

Offset

1,10

Comments

a(n) = A004216(n^2).

Links

Table of n, a(n) for n=1..105.

Mathematica

Table[Floor[Log10[n^2]], {n, 120}] (* Harvey P. Dale, Sep 17 2020 *)

Crossrefs

Cf. A004216, A077430.

Sequence in context: A087104 A343743 A069926 * A204553 A214455 A060417

Adjacent sequences: A077426 A077427 A077428 * A077430 A077431 A077432

Keyword

nonn

Author

Reinhard Zumkeller, Nov 05 2002

Status

approved