31282

Appears in sequences

• Primitive sliding numbers (excludes multiples of 10): totals, including repetitions, of sums r + s, r >= s, such that 1/r + 1/s = (r + s)/10^k for some k >= 0.at n=37A103184
• Number of n X n 0..1 arrays with every element equal to 0, 1, 2 or 4 king-move adjacent elements, with upper left element zero.at n=16A297882
• Sliding numbers which are products of two distinct primes.at n=11A357651