# A276068 (b-file synthesized from sequence entry) 2 1 3 3 4 9 5 26 6 74 7 210 8 598 9 1715 10 4963 11 14504 12 42808 13 127553 14 383451 15 1162134 16 3548060 17 10904023 18 33708595 19 104756233 20 327086895 21 1025603074 22 3228082910 23 10195295005 24 32300276271 25 102622734570 26 326893843104 27 1043767139218 28 3340051490096