# A056306 (b-file synthesized from sequence entry) 1 0 2 0 3 0 4 0 5 1 6 3 7 20 8 136 9 773 10 4280 11 22430 12 115097 13 577577 14 2863207 15 14051163 16 68515378 17 332514803 18 1608799915 19 7767857090 20 37460384315 21 180536313527 22 869901375049 23 4192038616700 24 20208367780744