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 A186190 #27 Jun 26 2024 11:27:22
%S A186190 1,1,1,3,5,9,1,3,5,1,1,3,6,1,2,4,7,1,2,4,8,1,2,5,9,1,3,6,1,2,3,6,1,2,
%T A186190 4,7,1,2,4,9,1,3,5,1,1,3,6,1,2,4,7,1,2,4,8,1,2,5,9,1,3,6,1,2,3,6,1,2,
%U A186190 4,7,1,2,4,9,1,3,5,1,1,3,6,1,2,4,7,1,2,4,8,1,2,5,9,1,3,6,1,2,3,6,1,2,4
%N A186190 First digit of tribonacci sequence A000213.
%C A186190 Sequence obeys the Benford law about distribution of first digit d in a sequence: P(d) = log_10(1+1/d).
%H A186190 <a href="/index/Be#Benford">Index entries for sequences related to Benford's law</a>
%e A186190 a(10) = 1 since A000213(10) = 193.
%t A186190 t = {1,1,1}; Do[AppendTo[t, t[[-1]] + t[[-2]] + t[[-3]]], {100}]; Table[IntegerDigits[i][[1]], {i, t}]
%Y A186190 Cf. A000030, A000213.
%K A186190 nonn,base
%O A186190 0,4
%A A186190 _Carmine Suriano_, Feb 14 2011
%E A186190 Offset changed by _Georg Fischer_, Jun 26 2024