# A186409 (b-file synthesized from sequence entry) 1 3 2 6 3 20 4 54 5 275 6 556 7 1965 8 3498 9 10206 10 43453 11 68135 12 242812 13 536104 14 785437 15 1644136 16 4712040 17 12760906 18 17591088 19 44736332 20 81493581 21 109311863 22 257863391 23 448980978 24 1007135164 25 2840344772 26 4695605081 27 6015397025 28 9803584533 29 12473509636 30 20063812526