44286

Appears in sequences

• Number of partitions satisfying cn(0,5) <= cn(1,5) + cn(4,5) + cn(2,5) + cn(3,5).at n=40A039849
• Numbers that are repdigits in base 9.at n=38A048334
• Number of closed walks of length n along the edges of a tetrahedron based at a vertex.at n=11A054878
• a(n) = 3*(9^n - 1)/4.at n=5A054880
• Largest a(n) values with at most n primes between a(n) and a(n)+sqrt(a(n)) inclusive.at n=12A076044
• Partial sums of A080925.at n=10A080926
• Numbers n such that A081249(m)/m^2 has a local maximum for m = n.at n=9A081251
• a(n) = floor(3^n / n).at n=11A092763
• Triangle read by rows: T(n,k) = (n+1,k)-th element of (M^9-M)/8, where M is the infinite lower Pascal's triangle matrix, 1<=k<=n.at n=16A096043
• Numbers with no 1's in base 3, 4 & 10 expansions.at n=38A117564
• a(n) = 3*a(n-1) - a(n-3) + 3*a(n-4), with initial values 1,3,7,20.at n=10A132868
• Partial sums of A132357.at n=10A135266
• Numbers k such that lambda(k) = lambda(k+1).at n=30A173695
• Floor((3^n-1)/n).at n=11A225585
• a(n) = a(n-1) + 2*a(n-2) - 2*a(n-3) + 3*a(n-4) - 3*a(n-5), where a(0) = 1, a(1) = 3, a(2) = 6, a(3) = 11, a(4) = 20, a(5) = 33.at n=18A297443
• a(n) = a(n-1) + 9*a(n-2) - 9*a(n-3), where a(0) = 1, a(1) = 3, a(2) = 6, a(3) = 33.at n=10A297444
• a(n) = n^2*(1+n)*(1+n^2)/4.at n=10A328994
• a(n) is the unique nonnegative integer whose binary expansion is the parity sequence of the Collatz orbit of n, interpreted through a particular conjugacy (see Comments).at n=37A389685