206569

Appears in sequences

• Number of permutations of length n which avoid the patterns 231, 12345.at n=19A116844
• One of the two successive approximations up to 2^n for 2-adic integer sqrt(17). This is the 1 (mod 4) case.at n=16A341538
• One of the two successive approximations up to 2^n for 2-adic integer sqrt(17). This is the 1 (mod 4) case.at n=17A341538
• One of the two successive approximations up to 2^n for 2-adic integer sqrt(17). This is the 1 (mod 4) case.at n=18A341538
• a(n) = smallest number x such that x^2 == 17 (mod 2^n).at n=20A350540
• a(n) = smallest number x such that x^2 == 17 (mod 2^n).at n=21A350540