2227758

Appears in sequences

• Number of 3 X 3 integer matrices with elements in the range [ -n,n ] which represent a four-fold rotation. Also the sequence for the corresponding four-fold rotoinversions.at n=14A053173
• Numbers of the form (6^i)*(13^j), with i, j >= 0.at n=30A107710
• Triangle read by rows: T(n,m) = Prime[m]^n*(Prime[m] - 1)/2.at n=19A121057
• Triangle of coefficients in expansion of (1+13x)^n.at n=26A123187
• Triangle read by rows: T(i,j) is the number of i-permutations of 14 objects a,b,c,d,e,f,g,h,i,j,k,l,m,n, with repetition allowed, containing j a's.at n=22A133371
• a(n) = ((n-th prime)^6-(n-th prime)^5)/2.at n=5A138460
• Numbers k such that the k-th cyclotomic polynomial has a root mod 13.at n=34A245481
• a(n) = A003415(A324886(n)).at n=32A329047