# A245012 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 3 4 16 5 125 6 1296 7 15967 8 225184 9 3573369 10 63006400 11 1222037531 12 25856693424 13 592684459237 14 14630486811136 15 386952126342615 16 10916525199478336 17 327220530559545713 18 10385328804324011136 19 347921328910693707955 20 12269256633867840769360