-1382

Appears in sequences

• Numerators in Taylor series for cot x.at n=6A002431
• Triangle read by rows: numerators of coefficients of the Hirzebruch L-polynomials L_n expressing the signature of a 4n-dimensional manifold in terms of its Pontrjagin numbers (as in Hirzebruch Signature Theorem).at n=28A237111
• Numerator of 2*n*(2*n+1) B_{2*n}, where B_n are the Bernoulli numbers.at n=6A290533
• G.f.: Product_{m>0} (1 - x^m + 2!*x^(2*m) - 3!*x^(3*m)).at n=45A293255
• Dirichlet inverse of Catalan numbers, when started from A000108(1): 1, 2, 5, 14, 42, ...at n=7A349449