50193

Appears in sequences

• Indices of primes in the sequence defined by A(0) = 23, A(n) = 10*A(n-1) + 63 for n > 0.at n=19A101973
• Number of tilings of an n X 1 rectangle (using tiles of dimension 1 X 1 and 2 X 1) that are not the concatenation of smaller equally-sized tilings.at n=25A224918
• Number of sawtooth patterns of length 1 in all Dyck paths of semilength n.at n=10A225015
• Numbers k such that between k and the next prime there are gpf(k) numbers, where gpf(k) denotes the largest prime factor of k.at n=33A235425
• a(0) = a(1) = 1, and a(n) = a(n-1) + a( (a(n-1)-1) mod n ) for n>=2.at n=42A268176
• Number of nX5 0..1 arrays with every element unequal to 0, 1, 2 or 3 king-move adjacent elements, with upper left element zero.at n=14A303724
• Number of nX3 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.at n=7A316204
• T(n,k)=Number of nXk 0..1 arrays with every element unequal to 0, 1, 2, 3, 5 or 8 king-move adjacent elements, with upper left element zero.at n=47A316209