# A349514 (b-file synthesized from sequence entry) 0 1 1 4 2 24 3 192 4 1792 5 18240 6 196224 7 2194176 8 25247232 9 296979456 10 3555010560 11 43165900800 12 530362220544 13 6581594275840 14 82373440339968 15 1038579580796928 16 13179023462498304 17 168183976239562752 18 2157085003249876992 19 27790652486543474688 20 359485965093121818624