33090

Appears in sequences

• Number of 5-tuples of different integers from [ 1,n ] with no common factors among triples.at n=26A015646
• Cycle class sequence c(2n) (the number of true cycles of length 2n in which a certain node is included) for zeolite AST = AlPO4-16 [Al20P20O80].4R.16H2O starting with a T1 atom.at n=6A018982
• Number of arrangements of 3 nonzero numbers x(i) in -n..n with the sum of floor(x(i)/x(i+1)) equal to zero.at n=31A189499
• Number of 4-bead necklaces labeled with numbers -n..n allowing reversal, with sum zero with no three beads in a row equal.at n=35A209345
• Triangle read by rows: T(n,k) = number of colored weighted Motzkin paths ending at (n,k).at n=59A293171
• a(n) = 5*4*3*2*1 + 10*9*8*7*6 + 15*14*13*12*11 + ... + (up to the n-th term).at n=12A319869