39006

Appears in sequences

• Number of binary [ n,5 ] codes.at n=13A034359
• a(n) = (2*n^3 + 5*n^2 + 21*n)/2.at n=32A162266
• a(n) = n*(n+1)*(5*n^2 - n - 3)/2.at n=11A172118
• a(n) = 25*n^2 + 25*n + 6.at n=39A177059
• Inverse of coefficient array of orthogonal polynomials P(n,x)=(x-2n)*P(n-1,x)-(2n-3)*P(n-2,x), P(0,x)=1,P(1,x)=x-2.at n=31A178121
• Total number of 4's digits in primes less than 10^n.at n=5A231593
• Numbers that are both interprime and oblong.at n=47A263676
• a(n) = 81*n^2 - 9*n.at n=22A277991
• Triples of practical numbers: numbers n such that n-2, n, n+2 are all practical numbers.at n=37A287682
• Maximum number of 6 sphinx tile shapes in a sphinx tiled hexagon of order n.at n=32A291582
• a(n) = (n^2 + 1)*(n^2 + 2).at n=14A304579