41860

Appears in sequences

• a(n) = n*(n+1)*(4*n+5)/6.at n=39A016061
• Denominators of column 2 of table described in A051714/A051715.at n=22A051719
• a(n) = A170907(2^n).at n=8A163862
• Number of lower triangles of a 4 X 4 0..n array with each element differing from all of its diagonal, vertical, antidiagonal and horizontal neighbors by one or less.at n=18A195234
• a(n) is the smallest m such that A001414(m)=n and ((m=0) mod n) and m/n is both squarefree and prime to n, or 0 if no such m exists.at n=50A267000
• a(n) = binomial(n+3, 3)*(1 + binomial(n+2, 3)/4).at n=12A291288
• Sum of all the parts in the partitions of n into 7 squarefree parts.at n=46A308953
• a(n) = least number > 1 that equals the sum of the n-th powers of its first k divisors for some k.at n=3A318528
• Expansion of g/(1 + x^3*g^2), where g = 1+x*g^3 is the g.f. of A001764.at n=8A387678