# A371231 (b-file synthesized from sequence entry) 0 1 1 0 2 2 3 3 4 152 5 930 6 42804 7 574140 8 27267456 9 613793376 10 31378237200 11 1021391030880 12 57256014687552 13 2456525677525920 14 152135168050833408 15 8093376365276966400 16 554533365688970342400 17 35081649646969248529920 18 2653840371674014197608448