476160

Appears in sequences

• Numbers k such that the least term in the periodic part of the continued fraction for sqrt(k) is 23.at n=31A031701
• Symmetric square array, read by antidiagonals: T(k, k) = T(0, k + 1) = Sum_{m = 0..k} C(k, m)*T(m, k - m) for k >= 0; T(0, 0) = 1; T(n, k) = T(n - 1, k) + T(n, k - 1) for n, k >= 1.at n=45A085484
• Symmetric square array, read by antidiagonals: T(k, k) = T(0, k + 1) = Sum_{m = 0..k} C(k, m)*T(m, k - m) for k >= 0; T(0, 0) = 1; T(n, k) = T(n - 1, k) + T(n, k - 1) for n, k >= 1.at n=54A085484
• First row of symmetric square table A085484, in which the main diagonal is equal to the first row shift left.at n=9A085485
• a(n) = 529*n^2 + 2*n.at n=29A158367
• Number of 2 X 2 matrices with entries in {0,1,...,n} and even trace with no entries repeated.at n=32A280056
• Irregular triangular array read by rows. T(n,k) is the number of matrices in GL_n(F_2) having order k, 1<=k<=2^n-1, n>=1.at n=32A346743
• Orders of the finite groups Aut(GL_2(K)) when K is a finite field with q = A246655(n) elements.at n=16A353247
• a(n) is the smallest number which can be represented as the sum of n distinct n-almost primes in exactly n ways, or -1 if no such number exists.at n=12A365494