28574

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 26.at n=12A031704
• Sums of distinct powers of 13.at n=18A033049
• Numbers n such that n | 10^n + 9^n + 1.at n=36A057295
• Sum of two powers of 13.at n=11A072390
• Given n colors, sequence gives number of ways to color the vertices of a square such that no edge has the same color on both of its vertices.at n=13A091940
• n-th Fibonacci number minus n-th prime number.at n=22A100700
• Indices of primes in sequence defined by A(0) = 43, A(n) = 10*A(n-1) + 23 for n > 0.at n=18A101726
• Square array T(r,m) read by antidiagonals: number of cyclically reduced words of length m in F_r.at n=48A104000
• Numbers k such that k^2 is the concatenation of two numbers m and 9*m.at n=1A115554
• a(n) = 169*n^2 + 13.at n=13A158548
• a(n) = 169*n^2 + n.at n=12A173275
• Numbers that can be formed using its own digits in order and only addition and fourth power operators.at n=26A195672
• Numbers k such that (266*10^k + 1)/3 is prime.at n=33A269303
• Coefficients in q-expansion of (E_2*E_4 - E_6)/720, where E_2, E_4, E_6 are the Eisenstein series shown in A006352, A004009, A013973, respectively.at n=13A281372
• Number of n X 3 0..1 arrays with no element unequal to a strict majority of its horizontal, diagonal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards.at n=13A281760
• Expansion of 1/sqrt(1 - 4*x/(1+x)^4).at n=13A361790
• Lesser of 2 successive tetraprimes (k, k+4) sandwiching three consecutive not squarefree numbers.at n=6A367791