25860

Appears in sequences

• Number of 5-tuples of different integers from [ 1,n ] with no common factors among pairs.at n=39A015698
• Number of 5-tuples of different integers from [ 2,n ] with no common factors among pairs.at n=39A015699
• Number of partitions satisfying 0 < cn(1,5) + cn(4,5) + cn(2,5) and 0 < cn(1,5) + cn(4,5) + cn(3,5).at n=38A039902
• First of triples of consecutive happy numbers, i.e., the first of three consecutive integers each of which is a happy number (A007770).at n=25A072494
• Number of ordered sextuples of distinct pairwise coprime positive integers with largest element n.at n=30A186977
• Column 4 of array in A226513.at n=9A226741
• The q-series expansion of an expression related to fermionic systems.at n=15A257949
• The total number of different isosceles trapezoids, excluding squares, that can be drawn on an n X n square grid where the corners of each individual trapezoid lie on a lattice point.at n=39A272459
• Expansion of (1/x) * Series_Reversion( x * (1-x)^3 / B(x) ), where B(x) is the g.f. of A001764.at n=5A381913