45012

Appears in sequences

• Number of 2n-bead balanced binary strings of fundamental period 2n, rotationally equivalent to reverse, complement and reversed complement.at n=22A045665
• Terms of A220698 that appear in A224218.at n=41A220752
• a(n) = n*(7*n^2-12*n+7)/2.at n=24A226451
• Number of defective 4-colorings of an n X 5 0..3 array connected horizontally, vertically, diagonally and antidiagonally with exactly one mistake, and colors introduced in row-major 0..3 order.at n=10A229575
• Lexicographically first sequence of distinct terms such that any set of six successive digits can be reordered as {d, d+1, d+2, d+3, d+4, d+5}, d being the smallest of the six digits.at n=70A302501
• Number of lattice 3-polytopes of width greater than 1, sublattice index 1, and size n.at n=5A319963
• Numbers k >= 1 such that A018804(k) is a Fibonacci number (A000045).at n=9A382869
• a(n) = Sum_{k=0..floor(2*n/3)} binomial(k+2,2) * binomial(k,2*n-3*k).at n=19A392269