234938

Appears in sequences

• Denominators of continued fraction convergents to sqrt(19).at n=13A041029
• Number of compositions of n with first part 2 and no equal adjacent parts; this is column 2 of the array in A096568.at n=25A096570
• G.f.: Product_{m>0} (1 + x^m + 2!*x^(2*m) + 3!*x^(3*m) + 4!*x^(4*m)).at n=30A289486