99280

Appears in sequences

• Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 12 (most significant digit on right).at n=17A029505
• a(n) = (1/6)*n!*[x^n] (2 + sec(3*x) + tan(3*x) + 3*sec(x) + 3*tan(x)).at n=7A320957
• A family of sequences converging to the exponential limit of sec + tan (A320956). Square array A(n, k) for n >= 0 and k >= 0, read by descending antidiagonals.at n=58A321400