49209

Appears in sequences

• Number of compositions of n into parts of sizes == 1 mod 5 or 4 mod 5.at n=28A116975
• Expansion of (1-4x^2)/(1+4x+3x^2).at n=10A128416
• a(n) = 2*a(n-1) + 3*a(n-2), with a(0) = 1, a(1) = 9.at n=9A137340
• a(n) = n^3 - (n+1)^2.at n=37A153257
• Number of nX3 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.at n=7A296630
• T(n,k)=Number of nXk 0..1 arrays with each 1 horizontally, vertically or antidiagonally adjacent to 0, 2 or 4 neighboring 1s.at n=47A296635
• Exponents k where A000120(3^k) - A070939(3^k)/2 reaches a new maximum.at n=43A372099