# A163190 (b-file synthesized from sequence entry) 0 1 1 2 2 13 3 72 4 722 5 7808 6 122538 7 2097280 8 43444163 9 1000262656 10 25997950850 11 743008372736 12 23312187863060 13 793714773262336 14 29197324076701082 15 1152921975865606144 16 48663045048486723204 17 2185911559738696663040