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A229190
Beginning position of n in the decimal expansion of the Copeland-Erdos constant.
2
48, 5, 1, 2, 21, 3, 31, 4, 41, 12, 47, 5, 62, 7, 22, 77, 32, 9, 95, 11, 589, 110, 113, 1, 128, 131, 137, 63, 149, 15, 158, 8, 14, 123, 24, 2, 188, 19, 42, 72, 206, 21, 215, 23, 227, 233, 236, 25, 248, 75, 257, 78
OFFSET
0,1
COMMENTS
Same as A165449 but including the a(0) term.
LINKS
Eric Weisstein's World of Mathematics, Copeland-Erdos Constant Digits
Eric Weisstein's World of Mathematics, Constant Digit Scanning
PROG
(Python)
from sympy import primerange
from itertools import count, takewhile
def afind(plimit):
s = "".join(str(p) for p in primerange(1, plimit+1))
return [1+s.find(str(n)) for n in takewhile(lambda i: str(i) in s, count(0))]
print(afind(10**4)) # Michael S. Branicky, May 01 2021
CROSSREFS
Cf. A033308 (decimal expansion of the Copeland-Erdos constant).
Cf. A165449 (same sequence but omitting the a(0) term).
Sequence in context: A036210 A257875 A037941 * A069012 A115927 A298619
KEYWORD
nonn,base,less
AUTHOR
Eric W. Weisstein, Sep 15 2013
STATUS
approved