# A377119 (b-file synthesized from sequence entry) 0 0 1 1 2 1 3 6 4 12 5 42 6 108 7 324 8 900 9 2592 10 7344 11 20952 12 59616 13 169776 14 483408 15 1376352 16 3919104 17 11158560 18 31772736 19 90465984 20 257587776 21 733432320 22 2088322560 23 5946120576 24 16930529280 25 48206658816 26 137259899136 27 390823128576 28 1112799347712 29 3168498166272