cp's OEIS Frontend

A373304 Decimal digits from Pi selected by stepping forward d+1 places at digit d, i.e., by skipping the next d places.

%I A373304 #30 Jun 28 2024 23:08:40
%S A373304 3,5,5,2,4,3,2,5,1,7,7,9,0,2,9,2,4,0,6,3,4,8,5,7,8,7,0,1,5,4,4,9,2,1,
%T A373304 9,4,4,8,3,2,2,9,6,0,2,4,3,0,2,7,6,5,8,9,9,7,6,0,6,4,5,1,6,5,6,1,5,8,
%U A373304 3,1,9,8,9,3,8,9,3,9,7,6,8,4,2,7,2,9,7,7,7,6,6,5,0,6,7,4,7,3,1,8
%N A373304 Decimal digits from Pi selected by stepping forward d+1 places at digit d, i.e., by skipping the next d places.
%C A373304 Are the digits uniformly distributed? Are all consecutive digit subsequences uniformly distributed?
%F A373304 a(n) = the (n+a(1)+a(2)+...+a(n-1))-th digit in the decimal expansion of Pi.
%e A373304 The sequence starts with the first digit of the decimal expansion of Pi, which is 3. The next term is the digit 3+1 places after this, namely, 5, and so on.
%e A373304 The digits selected from Pi begin
%e A373304   Pi = 3, 1, 4, 1, 5, 9, 2, 6, 5, 3, 5, 8, 9, 7, 9, 3, 2, 3, 8, 4, ...
%e A373304        ^           ^                 ^                 ^        ^
%t A373304 a={3}; s=1; For[n=2, n<=100, n++, s+=1+Part[a,n-1]; digits=First[RealDigits[Pi,10,s]]; AppendTo[a,Part[digits,s]]]; a
%Y A373304 Cf. A000796.
%Y A373304 Cf. A373079.
%K A373304 nonn,base,cons
%O A373304 1,1
%A A373304 _Karl Levy_, May 31 2024