# A135648 (b-file synthesized from sequence entry) 1 1 2 1922 3 3640691 4 6895473332 5 13060026530591 6 24735690249234458 7 46849397332052003953 8 88732758546906507089208 9 168059844687840924491185218 10 318305345838770710986638404668 11 602870325018631726608694781154978 12 1141836395585288490196867923237849768