28908

Appears in sequences

• Number of connected graphs with n nodes and n+1 edges.at n=11A001435
• Triangle read by rows: number of P-graphs by number of edges and number of non-root nodes.at n=38A011268
• Generalized sum of divisors function: third diagonal of A060044.at n=45A060045
• Values of n such that n^a-+a are primes, a=5.at n=29A155021
• Expansion of g.f.: (1+x+12*x^2-8*x^3)/(1-5*x-30*x^2+69*x^3+31*x^4-22*x^5).at n=5A177468
• Partial sums of ceiling(Fibonacci(n)/11).at n=26A179053
• a(n) is the optimal wire-length for an n X n grid.at n=31A195647
• Nonnegative values x of solutions (x, y) to the Diophantine equation x^2 + (x+511)^2 = y^2.at n=23A207078
• Triangle of coefficients of polynomials v(n,x) jointly generated with A208765; see the Formula section.at n=52A208766
• a(n) = 3*(n+1)*(9*n+4).at n=32A304503