OFFSET
1,2
COMMENTS
Primes > 7 occur in A210538 at indices n corresponding to digits "1" in the concatenation of the terms. This sequence lists counterexamples for which the converse is not true, i.e., position of digits "1" not corresponding to primes.
Note the irregular distribution: there are no terms between 34 and 187, but then many terms up to 597. These are followed by only 7 terms preceding 1020, which starts a series of 6 terms up to 1140.
EXAMPLE
CROSSREFS
KEYWORD
nonn,base
AUTHOR
M. F. Hasler, Mar 22 2012
STATUS
approved