# A177113 (b-file synthesized from sequence entry) 0 1 1 2 2 0 3 -2 4 -12 5 -42 6 -144 7 -466 8 -1476 9 -4522 10 -13384 11 -37794 12 -99964 13 -237738 14 -455104 15 -366706 16 2555276 17 20416150 18 103683976 19 445363518 20 1736519252 21 6310980502 22 21595986320 23 69654711278 24 210206070236 25 581729708502