41239

Appears in sequences

• Numerators of continued fraction convergents to sqrt(991).at n=5A042918
• Number of -2..2 arrays of n elements with first, second and third differences also in -2..2.at n=10A202118
• a(n) = 2*binomial(n,2) + 3*binomial(n,3) + 4*binomial(n,4).at n=23A384852