67881

Appears in sequences

• Number of binary strings of length n with no substrings equal to 0011 0101 or 0110.at n=20A164503
• a(n) is the smallest k such that the sum of squares of prime divisors of k is equal to the sum of prime divisors of n+k.at n=5A228182
• a(n) = A005940(1+A163511(n)).at n=70A335422
• Number of non-biquanimous subsets of {1..n} containing n.at n=17A371793