# A151430 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 7 4 19 5 61 6 224 7 771 8 2855 9 11005 10 41963 11 165661 12 664443 13 2674101 14 10955892 15 45281419 16 188288455 17 790957165 18 3343062477 19 14209485769 20 60792612875 21 261330644741 22 1128597807923 23 4896682653677 24 21327006074731 25 93233880458581 26 409028951228459 27 1800105977084221 28 7946053746358811