626349399

Appears in sequences

• Lexicographically earliest sequence such that the sequence and its first and second differences share no terms, and the 3rd differences are equal to the original sequence.at n=28A202349
• a(n) = smallest m that generates a rotationally symmetrical XOR-triangle T(m) with a central triangle of zeros with side length n.at n=23A334771
• a(n) sets a record for side length k of zero-triangle in a rotationally symmetrical XOR-triangle.at n=13A335077