# A048667 (b-file synthesized from sequence entry) 1 1 2 12 3 198 4 3604 5 69405 6 1386048 7 28403620 8 593399416 9 12584663901 10 270123960220 11 5855607723702 12 127986261470436 13 2952216605926965 14 62378907950601228 15 1388516401122627270