40919

Appears in sequences

• a(n) = (2*n+1)*(12*n+1).at n=41A033576
• a(n) = binomial(n+5,4) - 1.at n=28A063258
• Numbers k such that F(2*k + 1) is prime where F(m) is a Fibonacci number.at n=31A117517
• Numerator of sum of reciprocals of first n 5-simplex numbers A000389.at n=28A118431
• Number of ways to place zero or more nonadjacent 2,0 3,1 3,2 4,2 4,3 4,4 5,2 6,2 polyhexes in any orientation on a planar nXnXn triangular grid.at n=8A155447
• Numerators of r(n) := Sum_{k=0..n-1} 1/Product_{j=0..4} (k + j + 1), for n >= 0, with r(0) = 0.at n=29A300298
• Hankel transform of A331473.at n=10A331474
• a(n) = Sum_{k=1..n} gcd(k, n)^4.at n=13A343498