# A365878 (b-file synthesized from sequence entry) 0 1 1 1 2 5 3 17 4 83 5 381 6 1939 7 9905 8 52544 9 282315 10 1545130 11 8552557 12 47880020 13 270401515 14 1539288570 15 8821594865 16 50860072024 17 294774097800 18 1716506373521 19 10037592274363 20 58920231785426 21 347051995986538 22 2050627029532225 23 12151336260368205