37756

Appears in sequences

• a(n) = sum of terms of {a(1),a(2),a(3),...a(n-1)} which are coprime to n.at n=32A096217
• Record values in A046641.at n=40A145771
• Number of ways to place zero or more nonadjacent 0,0 1,0 2,0 3,1 3,2 4,1 5,2 6,3 polyhexes in any orientation on a planar nXnXn triangular grid.at n=8A155395
• a(n) = 1 + Sum_{d|n, d > 1} d^2*a(n/d).at n=35A307607
• Number of ways to fill a Young diagram with positive integers summing to n such that all rows and columns are weakly increasing.at n=17A323450