2995931

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=21A033120
• Base 4 digits are, in order, the first n terms of the periodic sequence with initial period 2,3,1.at n=10A037639
• Triangle read by rows: row n contains n terms of the arithmetic progression having first term 1 and common difference 2[n^(n-1)-1]/(n-1).at n=33A111568
• a(n) = Sum[2^(A001651(i-1)-1), {i,1,n}].at n=14A113836
• Numbers having in binary representation exactly two ones in three consecutive digits.at n=39A173593
• Numbers m with A030101(m) XOR A030109(m) = m for the binary representation of m.at n=7A245599
• (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=40A334041
• Numbers that generate rotationally symmetrical XOR-triangles featuring singleton zero bits in a hexagonal arrangement.at n=13A334930
• Fixed points of A341915.at n=15A341943