65600

Appears in sequences

• a(n) = n^2*(n+1).at n=40A011379
• Sums of 2 distinct powers of 4.at n=31A038470
• Numbers k such that phi(k) and cototient(k) are squares but k is not in A054755.at n=26A054756
• Sums of two powers of 4.at n=39A055236
• 1/6 the number of colorings of a 3 X 3 rhombic- or staggered- hexagonal array with n colors.at n=3A068244
• 1/6 the number of colorings of an n X n rhombic hexagonal array with 6 colors.at n=2A068273
• 1/6 the number of colorings of an n X n staggered hexagonal array with 6 colors.at n=2A068285
• If a(n-1)=abcde..., where a,b,c,d,e... are the digits, then a(n)=abcde...+a*bcde...+ab*cde...+abc*de...+abcd*e...+....at n=11A108721
• Triangle read by rows: row n is the first row of the matrix M[n]^(n-1), where M[n] is the n X n tridiagonal matrix with main diagonal (1,4,4,...) and super- and subdiagonals (1,1,1,...).at n=38A124576
• Numbers k such that k and k^2 use only the digits 0, 3, 4, 5 and 6.at n=15A136927
• a(n) = 4*n*(4*n^2 + 1).at n=16A144965
• a(n) = 64*n^2 + 2*n.at n=32A158070
• Bases with smallest unhappy number (in that base) > 2.at n=12A161874
• Number of reduced words of length n in Coxeter group on 41 generators S_i with relations (S_i)^2 = (S_i S_j)^4 = I.at n=3A163224
• Number of reduced words of length n in Coxeter group on 41 generators S_i with relations (S_i)^2 = (S_i S_j)^5 = I.at n=3A163677
• The positions i where A163355(i) = i, that is, the fixed points of permutation A163355.at n=37A163901
• Number of reduced words of length n in Coxeter group on 41 generators S_i with relations (S_i)^2 = (S_i S_j)^6 = I.at n=3A164091
• Number of reduced words of length n in Coxeter group on 41 generators S_i with relations (S_i)^2 = (S_i S_j)^7 = I.at n=3A164685
• Number of reduced words of length n in Coxeter group on 41 generators S_i with relations (S_i)^2 = (S_i S_j)^8 = I.at n=3A165173
• Number of reduced words of length n in Coxeter group on 41 generators S_i with relations (S_i)^2 = (S_i S_j)^9 = I.at n=3A165692