In this paper, we evaluate some series of the form k=1∑∞k(3k−1)(3k−2)mk(k4k)ak2+bk+c. For example, we prove that k=1∑∞k(3k−1)(3k−2)(k4k)(5k2−4k+1)8k=23π and k=1∑∞k(3k−1)(3k−2)(−8)k(k4k)415k2−343k+62=−3log2. We also pose many new conjectural series identities involving binomial coefficients; for example, we conjecture that k=0∑∞4096k(k2k)39(42k+5)0≤j<k∑(2j+1)41+(2k+1)325=65π3.