40117

Appears in sequences

• Numbers k such that 135*2^k-1 is prime.at n=29A050593
• Draw a line through every pair of points with coordinates (x, 1) and (x', 2) with x, x' in 1..n, and then count the number of intersection points above the line y = 2.at n=27A092275
• Numbers k such that 2^k - 13 is prime.at n=16A096818
• Numbers k such that prime(k+1) == 5 (mod k).at n=12A105329
• Number of permutations of 1..n with displacements restricted to {-5,-4,-2,0,1,3}.at n=13A189590
• Number of (n+1) X (4+1) 0..2 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=5A253491
• Number of (6+1) X (n+1) 0..2 arrays with every 2 X 2 subblock diagonal minus antidiagonal sum nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=3A253500