9979281

Appears in sequences

• Squares of numbers of trees.at n=14A001256
• Numbers of the form (9^i)*(13^j), with i, j >= 0.at n=30A108748
• Numbers with 33 divisors.at n=28A175743
• Number of nX4 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 0 1 0 vertically.at n=9A207422
• Number of (n+2)X2 0..2 arrays with all rows having a nonnegative second derivative, and all columns having a positive second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative.at n=5A223389
• T(n,k) is the number of (n+2) X k 0..2 arrays with all rows having a nonnegative second derivative, and all columns having a positive second derivative in a quadratic least squares fit, with one and two element arrays taken as having a zero second derivative.at n=26A223391
• a(1)=1; for n > 1, a(n) is the smallest number that has n divisors and is coprime to a(n-1).at n=32A351166