# A348847 (b-file synthesized from sequence entry) 1 1 2 2 3 4 4 8 5 16 6 36 7 144 8 576 9 900 10 3600 11 14400 12 32400 13 129600 14 435600 15 6969600 16 8643600 17 34574400 18 77792400 19 311169600 20 2498000400 21 2800526400 22 7779240000 23 9992001600 24 22482003600