# A065297 (b-file synthesized from sequence entry) 0 1 1 4 2 13 3 36 4 113 5 487 6 1036 7 3214 8 10456 9 36786 10 100963 11 319656 12 1001964 13 3165969 14 10001786 15 31626854 16 100013919 17 316256807 18 1000029656 19 3162322481 20 10000115537