OFFSET
1,1
REFERENCES
David Blatner, The Joy of Pi, Walker and Co., NY, 1997; page 91.
LINKS
Eric Weisstein's World of Mathematics, Pi Digits
EXAMPLE
a(1) = 7, because such a string first occur at the 7th string: 4592307816 (i.e., 61-70 digits of Pi).
MATHEMATICA
q[i_]:=q[i]=Take[RealDigits[Pi, 10, 10i][[1]], -10];
a={}; Do[If[Length@Union@q[i]==10, AppendTo[a, i]], {i, 130000}]
a
CROSSREFS
KEYWORD
nonn,base
AUTHOR
XU Pingya, Apr 27 2020
STATUS
approved