444445

Appears in sequences

• Smallest number k such that R(n) + k is a square, where R(n) = A002275.at n=11A083515
• Expansion of (1-6*x)/((1-x)*(1-10*x)).at n=6A093140
• Number of ways to reciprocally link elements of a 4 X n array either to themselves or to exactly two horizontal and antidiagonal neighbors, without consecutive collinear links.at n=13A220709
• Number of tilings of a 16 X n rectangle using 2n octominoes of shape I.at n=31A250665
• a(n) = decimal expansion of (n-1) prepended n times to the decimal expansion of n (n > 0).at n=4A267327