# A012744 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 504 4 24384 5 2375296 6 338479232 7 64501554688 8 16130341302272 9 5112670099460096 10 2003580047549120512 11 951418445045046378496 12 538352433444301745848320 13 357916525207050277213175808