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 A309592 Numbers k with 2 zeros in a fundamental period of A006190 mod k. 10
 7, 8, 11, 14, 15, 16, 17, 19, 20, 21, 22, 24, 28, 30, 31, 32, 33, 34, 35, 38, 39, 40, 42, 44, 45, 47, 48, 49, 51, 52, 55, 56, 57, 59, 60, 62, 63, 64, 66, 67, 68, 70, 71, 72, 75, 76, 77, 78, 80, 83, 84, 85, 87, 88, 90, 91, 93, 94, 95, 96, 98, 99, 100, 102, 104 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Numbers k such that A322906(k) = 2. This sequence contains all numbers k such that 4 divides A32290(k). As a consequence, this sequence contains all numbers congruent to 7, 11, 15, 19, 31, 47 modulo 52. This sequence contains all odd numbers k such that 8 divides A175182(k). LINKS PROG (PARI) for(k=1, 100, if(A322906(k)==2, print1(k, ", "))) CROSSREFS Cf. A006190, A175182, 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  | this seq Numbers k such that w(k) = 4 | A053029  | A309585  | A309593 * and also A053032 U {2} Sequence in context: A195240 A253318 A277026 * A090385 A145826 A102963 Adjacent sequences:  A309589 A309590 A309591 * A309593 A309594 A309595 KEYWORD nonn AUTHOR Jianing Song, Aug 10 2019 STATUS approved

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Last modified March 28 20:44 EDT 2020. Contains 333103 sequences. (Running on oeis4.)