106250

Appears in sequences

• a(n) = ((5+sqrt(5))/2)^n + ((5-sqrt(5))/2)^n.at n=9A020876
• Binomial transform of Fibonacci(2n-1) (A001519).at n=10A093129
• Numbers j that are the hypotenuse of exactly 16 distinct integer-sided right triangles, i.e., j^2 can be written as a sum of two squares in 16 ways.at n=4A097238
• Expansion of ((1+x)^3 - x^3)/((1+x)^5 - x^5).at n=20A105369
• Expansion of ((1+x)^4-(1+x)x^3)/((1+x)^5-x^5).at n=20A105370
• Maximal number of regions obtained by a straight line drawing of the complete bipartite graph K_{n,n}.at n=25A117717
• Minimal number (in decimal representation) with n nonprime substrings in base-5 representation (substrings with leading zeros are considered to be nonprime).at n=36A217105
• Expansion of x*log'(C(C(x)-1)-1), C(x) = (1-sqrt(1-4*x))/(2*x).at n=7A243585
• Numbers k such that the digits of k^2 are a subsequence of the digits of k^3.at n=20A362002