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a(3) = 1 because the digit string <8>111<7>, where n=3, d=1, d1=8<>1, and
d2=7<>1 in the following general form, occurs in the decimal expansion of Pi
with a smaller starting index than all occurrences for n=3 of the string
<d1>dd...d (n d's)<d2> for d=0, 2, 3, ..., or 9, where all of these n-digit
strings are immediately preceded by some d1<>d and followed by some d2<>d.
A049523(3) = 154 gives the starting index of this first occurrence of exactly
three consecutive equal digits; i.e. the first 1 in this 111 is the 154th
digit of Pi counting the 3 before the decimal point - add 1 to Pi-Search page
result - but ignoring the decimal point itself. (<d1> is of course not
completely applicable for the case n=1 in determining a(1).>
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