# A105600 (b-file synthesized from sequence entry) 0 1 1 5 2 9 3 16 4 25 5 43 6 91 7 105 8 427 9 463 10 484 11 4085 12 4306 13 4413 14 5583 15 6273 16 10172 17 18105 18 24946 19 31686 20 31886