# A158104 (b-file synthesized from sequence entry) 0 1 1 4 2 152 3 49920 4 191701440 5 9659304851456 6 6631121047328399360 7 63121566305846614746333184 8 8450364710466604643357631528951808 9 16116664948206611884835318695391740990586880