An exceptional binomial coefficient is a binomial coefficient such that . The following table gives the exception binomial coefficients which are also good binomial coefficients, are not of the form , and have specified least prime factors .
More things to try:
Weisstein, Eric W. "Exceptional Binomial Coefficient." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/ExceptionalBinomialCoefficient.html