# A073513 (b-file synthesized from sequence entry) 1 1 2 3 3 17 4 131 5 1055 6 8615 7 72951 8 633932 9 5602768 10 50193913 11 454577490 12 4153943134 13 38243708524 14 354330372215 15 3300752009165 16 30892997367352 17 290332329192655 18 2738477783884855 19 25913537508233527 20 245923809778144431 21 2339944887042508496 22 22316931815316988517