# A007291 (b-file synthesized from sequence entry) 2 7 3 63 4 254 5 710 6 1605 7 3157 8 5628 9 9324 10 14595 11 21835 12 31482 13 44018 14 59969 15 79905 16 104440 17 134232 18 169983 19 212439 20 262390 21 320670 22 388157 23 465773 24 554484 25 655300 26 769275 27 897507 28 1041138 29 1201354 30 1379385