# A344064 (b-file synthesized from sequence entry) 0 1 1 1 2 5 3 30 4 150 5 875 6 4500 7 25625 8 131250 9 750000 10 3843750 11 21562500 12 112109375 13 621093750 14 3222656250 15 17880859375 16 92578125000 17 508300781250 18 2658691406250 19 14465332031250 20 75439453125000 21 411254882812500 22 2142486572265625 23 11590576171875000 24 60722351074218750 25 326728820800781250