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 A309593 Numbers k with 4 zeros in a fundamental period of A006190 mod k. 10
 5, 10, 13, 25, 26, 29, 37, 41, 50, 58, 65, 73, 74, 82, 89, 97, 109, 125, 130, 137, 145, 146, 149, 157, 169, 178, 181, 185, 193, 194, 197, 205, 218, 229, 233, 241, 250, 269, 274, 281, 290, 293, 298, 314, 317, 325, 338, 349, 353, 362, 365, 370, 373, 377 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Numbers k such that A322906(k) = 4. Also numbers k such that A214027(k) is odd. LINKS PROG (PARI) for(k=1, 400, if(A322906(k)==4, print1(k, ", "))) CROSSREFS Cf. A006190, A322906, A322907. Let {x(n)} be a sequence defined by x(0) = 0, x(1) = 1, x(n+2) = m*x(n+1) + x(n). Let w(k) be the number of zeros in a fundamental period of {x(n)} modulo k.                              |   m=1    |   m=2    |   m=3 Primes p such that w(p) = 1  | A112860* | A309580  | A309586 Primes p such that w(p) = 2  | A053027  | A309581  | A309587 Primes p such that w(p) = 4  | A053028  | A261580  | A309588 Numbers k such that w(k) = 1 | A053031  | A309583  | A309591 Numbers k such that w(k) = 2 | A053030  | A309584  | A309592 Numbers k such that w(k) = 4 | A053029  | A309585  | this seq * and also A053032 U {2} Sequence in context: A313449 A313450 A292268 * A272267 A195735 A061145 Adjacent sequences:  A309590 A309591 A309592 * A309594 A309595 A309596 KEYWORD nonn AUTHOR Jianing Song, Aug 10 2019 STATUS approved

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Last modified October 13 20:38 EDT 2019. Contains 327981 sequences. (Running on oeis4.)