40953

Appears in sequences

• Number of nodes in regular n-gon with all diagonals drawn.at n=32A007569
• Number of intersection points of diagonals of an n-gon in general position, plus number of vertices.at n=33A014626
• First of three consecutive Ulam numbers (A002858) in arithmetic progression with difference 22.at n=24A068856
• Where records occur in A144294.at n=9A144295
• Number of (2+1) X (n+1) 0..2 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing x(i,j)+x(i-1,j) in the j direction.at n=37A250757
• Main diagonal of array A255551.at n=34A255550
• a(n) = Sum_{d|n} d^4*A000593(n/d).at n=13A288420
• Triangle read by rows: T(n,k) = number of parking functions of length n whose lead number is k.at n=23A298592