28378

Appears in sequences

• Numerator of sum of reciprocals of first n pentatope numbers A000332.at n=41A118411
• Number of nXnXn triangular binary arrays with all 1s connected, no 1 having more than 3 1s adjacent, and a path of 1s from peak vertex to anywhere on the bottom side.at n=5A163882
• a(n) = Sum_{k=1..n} (k+2)!/k! = Sum_{k=1..n} (k+2)*(k+1).at n=42A180118
• Number of nondecreasing arrangements of 5 numbers in -(n+3)..(n+3) with sum zero and not more than two numbers equal.at n=19A188238
• Expansion of f(-x^3, -x^5) * f(x^3, x^13) / (f(-x, -x^2) * f(-x^8, -x^16)) in powers of x where f(, ) is Ramanujan's general theta function.at n=46A258939
• Least integer k such that k/2^n > sqrt(3).at n=14A293325
• The integer k that minimizes |k/2^n - sqrt(3)|.at n=14A293326
• Number of (finite) line segments formed by drawing all least squares regression lines fitted to n points (j,y_j), 0 <= j < n, where each y_j is 0 or 1.at n=9A371438
• Triangle read by rows: the n-th row gives the least sequence of n consecutive numbers with the same number of divisors.at n=19A376557