66367

Appears in sequences

• a(n) is the index of the smallest triangular number containing exactly n 2's.at n=5A048357
• sigma(n) plus the n-th prime gives a cube.at n=9A114081
• G.f.: Product_{m>0} 1/(1 + x^m + 2!*x^(2*m)).at n=32A293287
• Smallest Boolean functions from big equivalence classes representing monotone functions (subsequence of A227723).at n=35A349743