40169

Properties

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 30.at n=6A031618
• Convolution of Fibonacci F(n+1), n>=0, with F(n+7), n>=0.at n=12A067430
• Primes of the form 16*m^2 + 169, m=1,2,3,...at n=17A087862
• Number of compositions (ordered partitions) of n such that some part is repeated consecutively 4 times and no part is repeated consecutively more than 4 times.at n=15A091618
• An accelerator sequence for Catalan's constant.at n=18A094648
• Trace sequence of a path graph plus loop.at n=18A096975
• Let M(n) be the n X n matrix m(i,j)=min(i,j) for 1<=i,j<=n then a(n) is the trace of M(n)^(-9).at n=2A114361
• Primes with distinct nonprime digits.at n=43A155024
• Primes that are anagrams of Fibonacci numbers.at n=27A162390
• One half of total number of round trips, each of length 2n, on the graph P_6 (o-o-o-o-o-o).at n=9A198636
• Sum of n-th powers of the roots of x^3 + 4*x^2 - 11*x - 1.at n=6A274663
• Smallest k such that 4^(5*4^n) - k is a safe prime.at n=3A377724
• Prime numbersat n=4220