This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A089282 #18 Mar 14 2025 18:52:19
%S A089282 1,1,2,2,3,1,2,3,5,3,4,2,3,3,3,3,5,2,6,5,4,6,7,6,3,4,8,3,4,6,4,6,7,2,
%T A089282 4,4,6,1,5,2,4,5,3,5,4,6,5,3,7,3,5,5,3,6,7,5,4,5,4,6,5,7,3,5,4,6,5,5,
%U A089282 3,4,7,8,6,6,6,5,5,6,8,5,5,4,7,7,5,6,4
%N A089282 Number of distinct prime factors of floor(Pi*10^n), Pi=3.14...
%H A089282 Tyler Busby, <a href="/A089282/b089282.txt">Table of n, a(n) for n = 0..200</a>
%F A089282 a(n) = A001221(A011545(n)).
%e A089282 n=6: floor(Pi*10^6) = 3141592 = 2*2*2*392699: a(6)=2.
%t A089282 Table[PrimeNu[Floor[Pi 10^n]],{n,0,80}] (* _Harvey P. Dale_, Dec 19 2022 *)
%Y A089282 Cf. A001221, A011545, A089283, A000796.
%K A089282 nonn
%O A089282 0,3
%A A089282 _Reinhard Zumkeller_, Oct 30 2003
%E A089282 More terms from _Ray Chandler_, Oct 31 2003
%E A089282 a(81)-a(86) from _Tyler Busby_, Mar 14 2025