21197

Appears in sequences

• Base-8 palindromes that start with 5.at n=29A043025
• a(n) = a(1) + a(2) + ... + a(n-1) + a(m) for n >= 4, where m = 2*n - 2 - 2^(p+1) and p is the unique integer such that 2^p < n-1 <= 2^(p+1), with a(1) = 1, a(2) = 3, and a(3) = 4.at n=13A049979
• Triangle, read by rows, equal to the matrix square of A113381. Also given by: Q^2 = R*P = R*Q*(R^-2)*Q*R = P*Q*(P^-2)*Q*P, using triangular matrices P=A113370, Q=A113381 and R=A113389.at n=24A113384
• Partial sums of A065641.at n=15A174202
• a(n) = n^3 - 4*n^2 + 6*n - 2.at n=26A188377
• Numbers n such that n^10+10 is prime.at n=34A239347