A062531 - OEIS

%I #10 Oct 28 2021 12:37:08

%S 2,4,24,282,738,8688,273413,92276646,73268943890,622074604151528

%N Index of smallest prime p such that there is a gap of 2^n between p and next prime.

%H Thomas R. Nicely, <a href="https://faculty.lynchburg.edu/~nicely/gaps/gaplist.html">First occurrence prime gaps</a> [For local copy see A000101]

%F a(n) =A000720[A000230[2^(n-1)]] = Pi[Min{p|p-prevprime(p)=2^n}]

%Y Cf. A000230, A000720, A062529.

%K hard,nonn

%O 1,1

%A _Labos Elemer_, Jun 25 2001

%E a(9)-a(10) from _Daniel Suteu_, Nov 18 2018 [based on data from A062529]