1059392917

Appears in sequences

• a(n) = 4^n - 3^n.at n=15A005061
• Nexus numbers (n+1)^15 - n^15.at n=3A022531
• Number of n X 15 binary arrays with a path of adjacent 1's from top row to bottom row.at n=1A069390
• G.f.: (2-x)/((1+3x)(1-4x)); e.g.f.: exp(4x) + exp(-3x); a(n) = 4^n + (-3)^n.at n=15A087452
• Main diagonal of triangular array T: T(j,1) = 1 for ((j-1) mod 6) < 3, else 0; T(j,k) = T(j-1,k-1) + T(j,k-1) for 2 <= k <= j.at n=31A129339
• First subdiagonal of triangular array T: T(j,1) = 1 for ((j-1) mod 6) < 3, else 0; T(j,k) = T(j-1,k-1) + T(j-1,k) for 2 <= k <= j.at n=31A131023
• a(n) = 2*a(n-1)+3*a(n-2)-6*a(n-3) starting a(0)=a(1)=0, a(2)=1.at n=30A167762
• a(n) = 2^n - A108411(n).at n=30A167936
• Number of second differences of arrays of length n + 2 of numbers in 0..3.at n=12A228213
• Number of third differences of arrays of length n+3 of numbers in 0..3.at n=11A228255