# A123012 (b-file synthesized from sequence entry) 0 1 1 2 2 25 3 92 4 709 5 3350 6 21589 7 113528 8 680425 9 3744938 10 21778801 11 122201300 12 701757421 13 3969742142 14 22676390125 15 128717365232 16 733638923089 17 4170342516050 18 23747102416969 19 135071397670988 20 768831946098325 21 4374163243287398 22 24893797354639621 23 141645022818314600