# A012130 (b-file synthesized from sequence entry) 0 1 1 1 2 9 3 169 4 6513 5 382449 6 33949369 7 4083320409 8 654225568353 9 132856897394785 10 33620948951783145 11 10322993203249787529 12 3791611637554126839505 13 1638719968206448148183889