20316

Appears in sequences

• Expansion of Product_{m>=1} (1+q^m)^(-10).at n=10A022605
• Numbers whose square is a zeroless pandigital number (i.e., use the digits 1 through 9 once).at n=11A071519
• Unsigned row sums of triangle A136590.at n=8A136594
• Number of nX3 binary arrays without the pattern 0 0 1 diagonally, vertically or antidiagonally.at n=5A189690
• T(n,k)=Number of nXk binary arrays without the pattern 0 0 1 diagonally, vertically or antidiagonally.at n=33A189696
• Number of 6Xn binary arrays without the pattern 0 0 1 diagonally, vertically or antidiagonally.at n=2A189699
• Numbers n such that n contains exactly 5 digits, all distinct, and n^2 contains exactly 9 distinct digits.at n=13A204691
• Number of 2 X 2 matrices having all elements in {-n,...n} and determinant 2.at n=37A209984
• Number of (n+1)X(n+1) -11..11 symmetric matrices with every 2X2 subblock having sum zero and three distinct values.at n=7A211711
• Conjecturally, the largest k such that prime(n)^2 is the largest squared prime divisor of binomial(2k,k).at n=39A239623
• Coefficient of x^n in Product_{k>=1} 1/(1+x^k)^n.at n=9A255526
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 605", based on the 5-celled von Neumann neighborhood.at n=14A283254
• Numbers whose square contains all of the digits 1 through 9.at n=11A294661
• Number of n X n 0..1 arrays with every element equal to 1 or 2 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=7A300343
• Number of sets of nonempty words over binary alphabet where each letter occurs n times.at n=6A360638
• Integers k such that there are i groups of order k+i up to isomorphism, for i=1,2,3.at n=12A373649