44445

Appears in sequences

• Numbers having four 4's in base 10.at n=20A043508
• Find smallest pair (x,y) such that x^2-y^2 = 11...1 (n times) = (10^n-1)/9; sequence gives value of y.at n=9A048612
• Smallest number k such that R(n) + k is a square, where R(n) = A002275.at n=9A083515
• Expansion of (1-6*x)/((1-x)*(1-10*x)).at n=5A093140
• Numbers m such that m*reversal(m) contains every decimal digit exactly once.at n=36A178929
• Numbers which have only digits 4 and 5 in base 10.at n=31A256290
• Total number of steps in all proper many times partitions of n.at n=8A327646
• Number of partitions of n with exactly four part sizes.at n=43A365630