# A367838 (b-file synthesized from sequence entry) 0 1 1 1 2 6 3 38 4 344 5 3832 6 51408 7 803952 8 14371456 9 289005440 10 6457624832 11 158719896832 12 4255775425536 13 123619815742464 14 3867071262472192 15 129610289219999744 16 4633674344869756928 17 176011269522607144960 18 7079115958438736363520