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 A333244 Prime numbers with prime indices in A333243. 2
 11, 127, 277, 1063, 2221, 3001, 4397, 5381, 7193, 9319, 10631, 12763, 15299, 15823, 21179, 22093, 24859, 30133, 33967, 37217, 38833, 40819, 43651, 55351, 57943, 60647, 66851, 68639, 77431, 80071, 84347, 87803, 90023, 98519, 101701, 103069, 125113, 127643 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS This sequence can also be generated by the N-sieve. LINKS Michael P. May, On the Properties of Special Prime Number Subsequences, arXiv:1608.08082 [math.GM], 2016-2020. FORMULA a(n) = prime(A333243(n)). EXAMPLE a(1) = prime(A333243(1)) = prime(5) = 11. MAPLE b:= proc(n) option remember;       `if`(isprime(n), 1+b(numtheory[pi](n)), 0)     end: a:= proc(n) option remember; local p;       p:= `if`(n=1, 1, a(n-1));       do p:= nextprime(p);         if (h-> h>2 and h::even)(b(p)) then break fi       od; p     end: seq(a(n), n=1..42);  # Alois P. Heinz, Mar 15 2020 CROSSREFS Cf. A078442, A262275, A333242, A333243. Sequence in context: A156970 A174270 A335954 * A141987 A048394 A088628 Adjacent sequences:  A333241 A333242 A333243 * A333245 A333246 A333247 KEYWORD nonn AUTHOR Michael P. May, Mar 12 2020 STATUS approved

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Last modified August 9 20:09 EDT 2020. Contains 336326 sequences. (Running on oeis4.)