# A058926 (b-file synthesized from sequence entry) 1 1 2 2 3 4 4 16 5 78 6 492 7 3684 8 32338 9 324040 10 3655904 11 45829650 12 632103368 13 9511692844 14 155072521134 15 2722880282556 16 51228761792264 17 1028137335712990 18 21924888117451540 19 495067474511372396 20 11800147895591266978 21 296073805579528721984 22 7800337057259433225256