# A187548 (b-file synthesized from sequence entry) 0 1 1 2 2 64 3 2436 4 131824 5 9203264 6 787735648 7 79884060128 8 9366719620672 9 1246887723480128 10 185786630586649792 11 30635253866287585088 12 5538860010787064796352 13 1089574788981508858403648 14 231683608824013918904796352 15 52954849085008593516185123648