A350621 - OEIS

%I #21 Jan 28 2022 16:38:10

%S 7,2,71,25,30,345,161,148,51,34,48,63,234,40,126,73,135,192,454,97,78,

%T 24841,433,85,17282073747557,322,102,106544217,207,556

%N a(n) is the smallest k such that A350877(k) = prime(n), or -1 if prime(n) does not appear in A350877.

%C Based on the data in A350620.

%Y Cf. A350877, A350618, A350620.

%K nonn,more

%O 1,1

%A _N. J. A. Sloane_, Jan 23 2022

%E a(25)-a(30) from _Martin Ehrenstein_, Jan 26 2022