38919

Appears in sequences

• Antidiagonal sums of square array A108625, in which row n equals the crystal ball sequence for A_n lattice.at n=10A108626
• Numbers whose natural logarithm, in base 10, starts with 10 distinct digits.at n=13A113509
• a(n) = (p*(p+4)+1)/2 where (p,p+4) are the n-th cousin prime pair.at n=16A163634
• Number of nondecreasing arrangements of 5 numbers in -(n+3)..(n+3) with sum zero and not more than two numbers equal.at n=21A188238
• Number of length n left factors of Dyck paths having no UUDD's; here U=(1,1) and D=(1,-1).at n=20A191794
• Number of (4+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.at n=10A250759
• Semiprimes that are the sum of the first n odd primes for some n.at n=38A274182
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + 2*b(n-1) - b(n-2), where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4.at n=18A294421