code: def _compute_log_combinations(n):
      """Compute all log combination of C(n, k)."""
      gammaln_arr = gammaln(np.arange(n + 1) + 1)
      return gammaln(n + 1) - gammaln_arr - gammaln_arr[::-1]
  
imports: from collections import namedtuple
  from dataclasses import make_dataclass
  import numpy
  import warnings
  from itertools import combinations
  import scipy.stats
  from scipy.optimize import shgo
  from .None import distributions
  from ._continuous_distns import chi2, norm
  from scipy.special import gamma, kv, gammaln
  from .None import _wilcoxon_data
label_desc: Use image node_id 16 for calling a global function with example usage: _compute_log_combinations(n) and returns: unknown