The first 32 solutions for A302931: Maximum number of 7's possible in an infinite Minesweeper grid with n mines. By Dmitry Kamenetsky, 16/04/2018 a(1-6)=0 a(7-10)=1 below is a(7) .......xxx ........7x .......xxx a(11-13)=2 below is a(11) ..xx...... .x7x...... .xxx...... .x7....... .xxx...... a(14-15)=3 ..xxxx.... ..x77x.... ..xxxx.... ..x7...... ..xxx..... a(16-19)=4 below is a(16) .....xxxxx .....x7x7x .....x7x7x .....xxxxx a(20-21)=5 below is a(20) .xxxxx.... .x77x7x... .xxxxxx... ...7x7.... ..xxxxx... a(22-24)=6 below is a(22) .xxxx.x... .x77x7x... .xxxxxx... ..7x77x... .xxxxxx... a(25-27)=7 below is a(25) xxxxxx.... x7x77x.... x7xxxx.... xxx77x.... x7xxxx.... xx........ a(28-29)=8 below is a(28) .xxxxxx... .x7x77x... .x7xxxx... .xxxx7x... .x77x7x... .xxxxxx... a(30-31)=9 below is a(30) .xxxxxx... .x7x7x7x.. .x7x7xxx.. .xxxxx7x.. .x7x7x7x.. ..xx.xxx.. a(32)=10 .xxxxxx... .x77x7x... .xxxx7x... .x77xxx... .xxxx7x... .x77x7x... .xxxxxx...