569786

Appears in sequences

• a(n) = K_4(n) = Sum_{k>=0} A090285(4,k)*2^k*binomial(n,k). a(n) = 2*(n^4+14*n^3+62*n^2+91*n+21)/3.at n=27A090296
• Power ceiling sequence of sqrt(5).at n=15A218983