157128

Appears in sequences

• Numbers k such that 37*2^k+1 is prime.at n=39A032368
• Number of binary strings of length n with no substrings equal to 0001, 0011, or 1010.at n=25A164457
• Length of n-th iterate of the mapping 00->001, 1->10, as in A284932.at n=25A286938
• a(n) = Sum_{k=0..floor(n/2)} 2^(n-2*k) * binomial(k,n-2*k)^2.at n=21A387515