表格开始
..3....6......10.........15............21...............28.................36
..6...22......63........154...........336..............672...............1254
.10...63.....322.......1439..........5767............20972..............69834
.15..154....1439......12958........110455...........870473............6275546
.21..336....5767.....110455.......2179956.........41299256..........725674326
.28..672...20972.....870473......41299256.......1976588468........89730161098
.36.1254...69834....6275546.....725674326......89730161098.....10811999412826
.45.2211..214774...41370842...11698232451....3776527762052...1224101415304069
.55.3718..615120..250517485..172994405326..146582077597322.128795068372302728
.66.6006.1653047.1402100369.2356249442222.5255148833158068
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