central binomial coefficient; Legendre polynomial
Theorem 1 of J.-J. Lee, Congruences for certain binomial sums. Czech. Math. J. 63 (2013), 65–71, is incorrect as it stands. We correct this here. The final result is changed, but the essential idea of above mentioned paper remains valid.
 Granville, A.: Arithmetic properties of binomial coefficients. I
. Binomial Coefficients Modulo Prime Powers AMS, Providence, RI Organic mathematics. Proceedings of the workshop, Simon Fraser University, Burnaby, Canada, 1995 J. Borwein et al. 253-276 (1997). MR 1483922
| Zbl 0903.11005