# A165215 (b-file synthesized from sequence entry) 0 1 1 8 2 56 3 392 4 2744 5 19208 6 134456 7 941192 8 6588344 9 46118380 10 322828464 11 2259797904 12 15818575920 13 110729965584 14 775109298096 15 5425761859728 16 37980310429488 17 265862014886160 18 1861032997362084 19 13027223233652040