118917domain: NAppears in sequencesNumerators in expansion of (1+x-sqrt(1-x^2))/(x(1-x)).at n=17A141245Numerators in expansion of (1+x-sqrt(1-x^2))/(x(1-x)).at n=18A141245Number of involutions avoiding the pattern 2341.at n=13A230552Number of integer partitions of prime(n) into a prime number of prime parts.at n=32A316154