189648

Appears in sequences

• Theta series of Niemeier lattice of type A_11 D_7 E_6.at n=2A008695
• Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 13 (most significant digit on right).at n=27A029506
• Duplicate of A008695.at n=2A047805
• a(n) = 8*n^4+44*n^3+106*n^2+100*n+30.at n=12A129029
• Array read by antidiagonals: T(n,k) = number of possible positions in standard Connect Four play on a board of height n and width k (n>=1, k>=1).at n=34A235610
• Numbers n such that sigma(x) - x = n has at least two solutions, with each x having the same squarefree kernel, where sigma(x) is the sum of divisor function (A000203).at n=1A252997