142116

Appears in sequences

• Numbers k such that k and k+1 have the same sum of squarefree divisors, or sqf(k) = sqf(k+1), where sqf(k) = A048250(k).at n=33A063964
• a(n) = 169*n^2 - 13.at n=28A158550
• Number of length n 1..(3+1) arrays with every leading partial sum divisible by 2, 3, 5 or 7.at n=10A258626
• Number k such that A033634(k) = A033634(k+1).at n=30A349224