# A130463 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 7 4 25 5 75 6 275 7 927 8 3438 9 12306 10 46131 11 170695 12 646399 13 2439582 14 9321149 15 35629281 16 137156187 17 528893353 18 2048588717 19 7950709147 20 30951860693 21 120722736668 22 471927571577 23 1847953114948 24 7248961671334 25 28476897249963