| 数据
|
-2, 0, -2, 5, 15, 49, 120, 279, 605, 1265, 2562, 5070, 9842, 18810, 35480, 66181, 122265, 223991, 407340, 735945, 1321903, 2361985, 4200468, 7437900, 13118950, 23056164, 40386850, 70529189, 122820915,213323245,369611232,638945835,1102195697,1897522865
|