24914

Appears in sequences

• Perrin sequence (or Perrin numbers, or Ondrej Such sequence): a(n) = a(n-2) + a(n-3) with a(0) = 3, a(1) = 0, a(2) = 2.at n=36A001608
• Number of primitive (period n) periodic palindromic structures using exactly five different symbols.at n=17A056522
• Numbers n such that p1=2n+3, p2=4n+5, p3=6n+7 and p4=8n+9 are all prime.at n=17A105653
• Expansion of ( 2+x+2*x^2 ) / ( 1-2*x+x^2-x^3 ).at n=16A109377
• Perrin numbers which are divisible by their digital root.at n=15A117959
• a(n) = round(r^n) where r is the smallest Pisot number (real root r=1.3247179.. of x^3-x-1).at n=36A205579
• a(n) = a(n-1) + a(n-2) + a(n-4).at n=18A259967
• Number of edges in a complete bipartite graph where the vertices in the two parts are placed on opposite sides of a parabola at integer x coordinates |x| = 1, 2, ...n.at n=15A392427