supported by National Natural Science Foundation of China(Grant No.11171140);the PAPD of Jiangsu Higher Education Institutions
For m = 3, 4,..., the polygonal numbers of order m are given by pm(n) =(m- 2) n2 + n(n= 0, 1, 2,...). For positive integers a, b, c and i, j, k 3 with max{i, j, k} 5, we call the triple(api, bpj, cpk)universal if for ...
supported by National Natural Science Foundation of China(Grant Nos.10901078 and 11171140)
This paper proves three conjectures on congruences involving central binomial coefficients or Lucas sequences.Let p be an odd prime and let a be a positive integer.It is shown that if p=1(mod 4)or a〉1then [3/4pa]∑...
supported by National Natural Science Foundation of China (Grant No.11171140);the PAPD of Jiangsu Higher Education Institutions
For integers b and c the generalized central trinomial coefficient Tn(b,c)denotes the coefficient of xnin the expansion of(x2+bx+c)n.Those Tn=Tn(1,1)(n=0,1,2,...)are the usual central trinomial coefficients,and Tn(3,2...
supported by National Natural Science Foundation of China (Grant Nos. 11271185,11171140 and 11226277);the Initial Founding of Scientific Research for the Introduction of Talents of Nanjing Institute of Technology,China (Grant No. YKJ201115)
We prove some 3-adic congruences for binomial sums,which were conjectured by Zhi-Wei Sun.For example,for any integer m≡1(mod 3)and any positive integer n,we have v3(1/n ∑n-1X k=0 1/mk 2k/ k〉))≥min{3(n),3(...