77938

Appears in sequences

• Number of Fermat pseudoprimes to base 2 between 2^n and 2^(n+1) that are not Carmichael numbers.at n=42A252943
• p-INVERT of (1,1,0,0,0,0,...), where p(S) = 1 - S - S^2 - 2 S^3.at n=11A291410
• Number of n X n 0..1 arrays with every element equal to 1, 2 or 4 king-move adjacent elements, with upper left element zero.at n=20A297851
• Number of subwords of the form UDD in nondecreasing Dyck paths of length 2n.at n=12A377670