Level Closeness 1 0 2 1 3 3 4 6 5 14 6 31 7 60 8 108 9 181 10 287 Level Closeness 11 434 12 632 13 891 14 1224 15 1642 16 2161 17 2793 18 3557 19 4467 20 5542 Level Closeness 21 6801 22 8263 23 9950 24 11882 25 14084 26 16578 27 19391 28 22548 29 26074 30 30000 - Contributed by Oliver Heartmont
Level Closeness 1 0 2 1 3 3 4 6 5 14 6 31 7 60 8 108 9 181 10 287 Level Closeness 11 434 12 632 13 891 14 1224 15 1642 16 2161 17 2793 18 3557 19 4467 20 5542 Level Closeness 21 6801 22 8263 23 9950 24 11882 25 14084 26 16578 27 19391 28 22548 29 26074 30 30000 - Contributed by Oliver Heartmont