448227521

Appears in sequences

• a(0) = 0, a(1) = a(2) = a(3) = 1; thereafter, a(n) = a(n-1) + a(n-2) + a(n-4).at n=38A005251
• Pisot sequences E(4,7), P(4,7).at n=33A010901
• Take every 5th term of Padovan sequence A000931, beginning with the third term.at n=15A012814
• Expansion of (1 - x)/(1 - 3*x + 2*x^2 - x^3).at n=24A052921
• Row sums of the triangular matrix A190088.at n=12A190089
• Unmatched value maps: number of n X 2 binary arrays indicating the locations of corresponding elements not equal to any horizontal or antidiagonal neighbor in a random 0..1 n X 2 array.at n=18A218836