46421

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has odd period and if the last term of the periodic part is deleted the two central terms are both 17.at n=24A031605
• Composite and every divisor (except 1) contains the digit 6.at n=13A062674
• a(n) = 4*a(n-1) + 1, a(1)=11.at n=6A072262
• Numbers n such that C(4n,n)/(3n+1) (A002293) is not divisible by 4.at n=43A078971
• Triangle of sums of Jacobsthal numbers related to binomial(4n,n)/(3n+1) mod 4.at n=34A113049
• Number of 5-bead necklaces labeled with numbers -n..n not allowing reversal, with sum zero and avoiding the patterns z z+1 z+2 and z z-1 z-2.at n=11A209117
• a(n) is the smallest number that is the sum of both 2n-1 and 2n+1 consecutive primes.at n=33A213174
• Rectangular array with all start numbers Mo(n, k), k >= 1, for the Collatz operation ud^(2*n-1), n >= 1, ending in an odd number, read by antidiagonals.at n=42A238476
• Decimal representation of the middle column of the "Rule 59" elementary cellular automaton starting with a single ON (black) cell.at n=15A266721