67399

Properties

Appears in sequences

• a(n) = Sum_{k=0..n} T(n,k), where T is the array defined in A025177.at n=11A025191
• Expansion of x^2*(2*x^11+2*x^9+2*x^8+x^7+2*x^6+x^5+x^4+x^3-x^2-x-1) / (x^9+x^6+2*x^3-1).at n=41A099206
• Expansion of x^2*(2*x^11+2*x^9+2*x^8+x^7+2*x^6+x^5+x^4+x^3-x^2-x-1) / (x^9+x^6+2*x^3-1).at n=43A099206
• Expansion of x^2*(2*x^11+2*x^9+2*x^8+x^7+2*x^6+x^5+x^4+x^3-x^2-x-1) / (x^9+x^6+2*x^3-1).at n=45A099206
• a(n) = 2*a(n-1) + a(n-2) + a(n-3).at n=13A109545
• Partial sums of number of n-step closed paths on hexagonal lattice A002898.at n=8A180016
• a(n) is the number of ways to partition n X n X n cube into 5 noncongruent cuboids.at n=14A384479
• Primes that are the sum of some first primes minus one.at n=19A388261
• Prime numbersat n=6712