疑難找規(guī)律

85815

（這道題不適合發(fā)到邏輯區(qū)因?yàn)槲矣X得這不是人做的題）
朋友給的題，據(jù)說是某一屆IMO的神奇找規(guī)律。
0,1,3,2,5,4,6,3,7,6,8,5,10,7,9,4，？
網(wǎng)上沒答案（至少我沒找到）
@天馬行空

22568

@我作甚..
下一項(xiàng)是9527,因?yàn)橥?xiàng)公式是

1. 173611-(138484294591/240240)*n+(93077/20922789888000)*n^16-(405811/242611200)*n^13+(43745389/1046139494400)*n^14-(332897/523069747200)*n^15-(131188972409/914457600)*n^9+(95142558001/7315660800)*n^10-(73271267/82114560)*n^11+(5233364797/114960384000)*n^12+(165599910762199/201801600)*n^2-(223117770655471/330220800)*n^3+(17638785137200319/48432384000)*n^4-(14102969295311/102643200)*n^5+(217097008707211/5748019200)*n^6-(4052785211849/522547200)*n^7+(176656363444427/146313216000)*n^8

復(fù)制代碼

嘛..言歸正傳..
A326730
oeis都有的東西乃告訴我網(wǎng)上搜不到?

0, 0, 3, 1, 5, 7, 4, 3, 9, 11, 8, 15, 14, 9, 10, 7, 17, 19, 16, 23, 22, 17, 18, 31, 26, 29, 30, 19, 24, 21, 22, 15, 33, 35, 32, 39, 38, 33, 34, 47, 42, 45, 46, 35, 40, 37, 38, 63, 50, 53, 54, 59, 48, 61, 62, 39, 60, 49, 50, 43, 52, 45, 46, 31, 65, 67, 64, 71, 70, 65, 66, 79, 74, 77, 78, 67, 72, 69, 70, 95, 82, 85, 86, 91, 80, 93, 94, 71, 92, 81, 82, 75, 84, 77, 78, 127, 98, 101, 102, 107, 96

Problem 5 of IMO 2019