73178

Appears in sequences

• a(n) = a(n-1) + a(n-3) + a(n-4) + a(n-5) + a(n-7).at n=23A107480
• Euler transform of powers of 7.at n=5A144071
• Composite numbers m such that (m'+1)' = m', where m' = A003415(m) is the arithmetic derivative of m.at n=5A185222