30769

Appears in sequences

• Expansion of (2+x+3*x^2+2*x^3+x^4)/(1-x-5*x^2+x^3+3*x^4-x^5).at n=10A072684
• Number of nX3 array permutations with each element moving one space diagonally, horizontally or vertically.at n=5A189349
• Number of nX6 array permutations with each element moving one space diagonally, horizontally or vertically.at n=2A189352
• T(n,k) is the number of n X k array permutations with each element moving one space diagonally, horizontally or vertically.at n=30A189355
• T(n,k) is the number of n X k array permutations with each element moving one space diagonally, horizontally or vertically.at n=33A189355
• Wiener index of a benzenoid consisting of a spiral chain of n hexagons (s=1; see the Gutman et al. reference).at n=19A193391