0,1

Count the number of 2's digits in 10^n primes

At a(0)=3 there are 3 2's digits in 10^1, the first 10 primes

Cf. A119290, A119291-A119292, A119294-A119300.

Sequence in context: A053972 A126738 A109074 this_sequence A136046 A122949 A049088

Adjacent sequences: A119290 A119291 A119292 this_sequence A119294 A119295 A119296

easy,more,nonn

Enoch Haga (Enokh(AT)comcast.net), May 13 2006