37697

Appears in sequences

• a(n) = A000217(A000217(n))-n^2.at n=23A086602
• a(n) = (n+1)*(n^3+15*n^2+74*n+132)/12.at n=22A217947
• Construct sequences P,Q,R by the rules: Q = first differences of P, R = second differences of P, P starts with 1,3,9, Q starts with 2,6, R starts with 4; at each stage the smallest number not yet present in P,Q,R is appended to R. Sequence gives P.at n=54A225385
• Number of maximal matchings in the n-gear graph.at n=14A287425
• a(n) = Sum_{d|n} phi(d)^(n/d+1).at n=38A342488
• Numbers whose square and cube taken together contain each decimal digit at least twice.at n=34A363909