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(Python)
from math import comb
def A060690(n): return comb((1<<n)+n-1, n) # Chai Wah Wu, Jul 05 2024
Central terms of A137153.
a(n) = A163767(2^n). - Alois P. Heinz, Jun 12 2024
Cf. A002416, A060336, A088309, A163767.
Cf. A136555, A220886.