# A135921 (b-file synthesized from sequence entry) 0 1 1 1 2 3 3 13 4 81 5 669 6 6955 7 88505 8 1346209 9 23998521 10 493956467 11 11596542533 12 307301505073 13 9110471500693 14 299893197116059 15 10888674034993905 16 433549376981078593 17 18833037527449398129 18 888439543634687700579