85074

Appears in sequences

• Numbers k such that 4^k == -1 (mod k-1).at n=4A055687
• Number of nX4 0..1 arrays with every element equal to 0, 1, 3, 4 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=11A300940
• Lesser of 2 successive tetraprimes (k, k+4) sandwiching three consecutive not squarefree numbers.at n=21A367791