38613964

Appears in sequences

• Number of polynomials of height n: a(1)=1, a(2)=1, a(3)=4, a(n) = 2*a(n-1) + a(n-2) + 2 for n >= 4.at n=20A005409
• a(n) = A000129(n) + (-1)^n.at n=21A111954
• a(n) = 6*a(n-1) - a(n-2) + 4 with n > 1, a(0)=0, a(1)=4.at n=10A182190
• Row sums of triangle in A152719.at n=38A238375
• a(n) = A048739(n-1) mod A000129(floor(n/2)).at n=40A270708