# A343276 (b-file synthesized from sequence entry) 0 0 1 1 2 10 3 81 4 652 5 5545 6 50886 7 506905 8 5480056 9 64116657 10 808856290 11 10959016321 12 158851484100 13 2454385635481 14 40285778016862 15 700261611998985 16 12853532939027056 17 248482678808005345 18 5047002269952482106 19 107466341437781300017 20 2394019421567804960380