39391

Appears in sequences

• Strong pseudoprimes to base 86.at n=13A020312
• The sum of the elements in the first, middle and last row of the n-th power of the 9-by-9 matrix defined in the formula.at n=8A134326
• Number of planar triangular n X n X n nonnegative integer grids with every similarly oriented 3 X 3 X 3 subtriangle summing to 6.at n=4A154056
• Semiprimes formed by concatenating n, n, and 1 for n = 1, 2, 3,....at n=17A210711
• First row of spectral array W(gamma+1).at n=21A250253