66605

Appears in sequences

• Number of 5-dimensional centered tetrahedral numbers.at n=16A008499
• Number of 3-level labeled linear rooted trees with n leaves.at n=6A050351
• Related to Fibonacci numbers, see the Formula section.at n=37A215082
• a(n) = A215082(2*n+1).at n=18A215109
• E.g.f.: (8 - 7*cosh(x)) / (13 - 12*cosh(x)).at n=3A247082
• Generalized Fubini numbers. Square array read by ascending antidiagonals, A(n,k) = 1 + k*(Sum_{j=1..n-1} C(n,j)*A(j,k)); n>=0 and k>=0.at n=38A257565
• Matrix product of triangle of Stirling numbers of second kind A008277 and square of unsigned Lah triangle A105278.at n=15A308440
• Numbers k such that A360327(k) = A360327(k+1) > 1.at n=15A360358