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 A317249 Positions of records in A204911. 1
 1, 4, 20, 28, 44, 101, 359, 667, 673, 821, 869, 1079, 2623, 3851, 4987, 5171, 9397, 18833 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 LINKS EXAMPLE a(1)=1 with A204911(1)=5. a(2)=4 because A204911(4)=7 while A204911(k)<=5 for k<4. a(3)=20 because A204911(20)=11 while A204911(k)<=7 for k<20. MAPLE f:= proc(n) local V, q, r;   V:= Array(0..n-1); q:= 4;   do    q:= nextprime(q);    r:= q mod n;    if V[r] = 0 then V[r]:= q    else return V[r]    fi   od end proc: Recs:= 1: r:= 5: for n from 2 to 20000 do   rn:= f(n);   if rn > r then Recs:= Recs, n; r:= rn fi od: Recs; CROSSREFS Cf. A204911, A317250. Sequence in context: A198831 A323040 A259755 * A181433 A079454 A205670 Adjacent sequences:  A317246 A317247 A317248 * A317250 A317251 A317252 KEYWORD nonn,more AUTHOR Robert Israel, Jul 24 2018 STATUS approved

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Last modified January 21 19:33 EST 2021. Contains 340352 sequences. (Running on oeis4.)