19174

Appears in sequences

• "Correlation triangle" of central binomial coefficients A000984.at n=49A115255
• Let f(i) = prime( f(i - 1) (modulo 10^n) ) with f(0) = 1; a(n) is the length of the period of the sequence f(i).at n=9A128867
• Positions of 3's in A234323.at n=47A234804
• Engel expansion of plastic constant (real root of x^3 - x - 1).at n=14A278766
• a(n) = prime(n) + prime(n+1) * prime(n+2).at n=31A293206
• a(n) = a(n-1) + 3*a(n-2) -2*a(n-3) - 2*a(n-4), where a(0) = -2, a(1) = -2, a(2) = 2, a(3) = 1.at n=17A295854
• Number of non-isomorphic spanning hyperforests of weight n.at n=17A304912
• a(n) = (-1)^n + Sum_{k=0..floor((n-1)/2)} a(k) * a(n-2*k-1).at n=33A351973
• Number of integer partitions of n with a neighborless part.at n=37A356236