# A064611 (b-file synthesized from sequence entry) 1 1 2 2 3 8 4 11 5 12 6 174 7 212 8 524 9 1567 10 14096 11 19795 12 38466 13 42114 14 55575 15 338809 16 498001 17 1175281 18 2424880 19 3994532 20 7908519 21 48453784 22 696840720 23 5497869355 24 7479239685