83210

Appears in sequences

• Number T(n,k) of involutions of [n] having exactly k peaks; triangle T(n,k), n>=0, 0<=k<=max(0,floor((n-1)/2)), read by rows.at n=52A303648
• a(n) is the smallest k such that A340745(k) - k = n.at n=12A340825
• a(n) is the largest integer with distinct digits whose digital sum is n.at n=14A381645