42687

Appears in sequences

• Numbers that are the sum of 3 positive cubes in exactly 3 ways.at n=33A025397
• Numbers that are the sum of 3 positive cubes in 3 or more ways.at n=35A025398
• a(n) = T(2n-1,n-2), T given by A026536.at n=8A026546
• Expansion of 3*x*(1+2*x)/(1-3*x-3*x^2).at n=8A085480
• Expansion of (2-3*x)/(1-3*x-3*x^2).at n=8A172012
• The Wiener index of the Dutch windmill graph D(6,n) (n>=1).at n=30A180578
• Number of (2+1) X (n+1) arrays of permutations of 0..n*3+2 with each element having directed index change 0,1 2,2 1,0 -1,2 -2,-1 or -1,-1.at n=9A264423
• Square array A(n,k), n >= 0, k >= 0, read by antidiagonals, where column k is the expansion of continued fraction 1/(1 + x/(1 - 2^k*x/(1 + 3^k*x/(1 - 4^k*x/(1 + 5^k*x/(1 - ...)))))).at n=48A291207
• 1/(Integral_{x=0..1} x^(x^(x^n)) dx - 1/2), rounded to the nearest integer.at n=42A322009