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A297415 Numbers k such that A019320(k) is in A217465. 2
25, 36, 52, 92, 124, 306, 361, 630, 656, 1648, 1780, 2508, 3300, 3540, 5728, 6260, 6450, 7500, 10820, 12656, 14076, 14132, 18836, 20960, 23456, 24272, 35280, 43136 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
PROG
(PARI) is_A297415(n) = my(m=polcyclo(n, 2)); (m>1) && Mod(2, m*(m+1))^m==2 && !ispseudoprime(m);
CROSSREFS
Set difference of A297414 and ({1} U A072226).
Sequence in context: A264906 A263095 A077502 * A346526 A282550 A265505
KEYWORD
nonn,more
AUTHOR
Max Alekseyev, Dec 29 2017
STATUS
approved

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Last modified June 12 12:09 EDT 2024. Contains 373331 sequences. (Running on oeis4.)