# A055909 (b-file synthesized from sequence entry) 3 1 4 6 5 20 6 53 7 121 8 249 9 471 10 836 11 1409 12 2276 13 3544 14 5350 15 7862 16 11286 17 15866 18 21896 19 29721 20 39746 21 52436 22 68331 23 88047 24 112287 25 141841 26 177604 27 220577 28 271880 29 332752 30 404572 31 488860 32 587292 33 701700 34 834096 35 986673 36 1161822 37 1362132