374491

Appears in sequences

• Base-2 digits of a(n) are, in order, the first n terms of the periodic sequence with initial period 1,0,1.at n=18A033120
• a(n) = Sum[2^(A001651(i-1)-1), {i,1,n}].at n=12A113836
• Numbers having in binary representation exactly two ones in three consecutive digits.at n=33A173593
• Numbers m with A030101(m) XOR A030109(m) = m for the binary representation of m.at n=6A245599
• (a(n-2) XOR a(n-1)) OR (highest bit of a(n-2))*2 OR 1; a(0)=2, a(1)=3.at n=34A334041
• Numbers that generate rotationally symmetrical XOR-triangles featuring singleton zero bits in a hexagonal arrangement.at n=11A334930
• Fixed points of A341915.at n=13A341943
• Triangle T(n,k) in which the n-th row encodes the inverse of a 3n+1 X 3n+1 Jacobi matrix, with 1's on the lower, main, and upper diagonals in GF(2), where the encoding consists of the decimal representations for the binary rows (n >= 1, 1 <= k <= 3n+1).at n=50A363099