55540

Appears in sequences

• Poincaré series [or Poincare series] P(C#_{3,2}; x).at n=35A124630
• Number of -5..5 arrays x(0..n-1) of n elements with zeroth through n-1st differences all nonzero.at n=4A199940
• T(n,k)=Number of -k..k arrays x(0..n-1) of n elements with zeroth through n-1st differences all nonzero.at n=40A199943
• Number of -n..n arrays x(0..4) of 5 elements with zeroth through 4th differences all nonzero.at n=4A199946
• From the enumeration of involutions avoiding the pattern 4321.at n=18A217525
• Sum over the genera g of the number of immersions of an oriented circle with n crossing in an oriented surface of genus g.at n=5A260296
• Number of compositions of n with weakly increasing differences.at n=39A325546
• a(1) = 15; for n > 1, a(n)^2 is the smallest square that begins with a(n-1) in base 6.at n=21A336251