# A025956 (b-file synthesized from sequence entry) 0 1 1 27 2 493 3 7671 4 109813 5 1496031 6 19737181 7 254700567 8 3234969925 9 40605328335 10 505121007469 11 6240023291463 12 76665993102037 13 937849058035839 14 11432760118860157 15 138978835693603959 16 1685603171125077349