66209

Appears in sequences

• Number of subsets of {1,2,...,n} with the sum of reciprocals <= 1.at n=19A212657
• Number of 3Xn 0..1 arrays with exactly floor(3Xn/2) elements unequal to at least one horizontal, diagonal or antidiagonal neighbor, with new values introduced in row major 0..1 order.at n=10A222511
• Numbers m such that (4^m + 17) / 3 is prime.at n=17A261578