20265

Appears in sequences

• Number of partitions into non-integral powers.at n=12A000345
• a(n) = T(n,0) + T(n,1) + ... + T(n,[ n/2 ]), T given by A026659.at n=14A026667
• T(2n,n+1), T given by A026758.at n=7A026872
• Values of e, the lesser key or generating number for Pythagorean triangles in which S (the odd short leg) and U (the hypotenuse) are twin primes.at n=42A051892
• Numbers n such that 7*3^n + 2 is prime.at n=16A058603
• a(n) is the (n+1)st (n+2)-gonal number.at n=34A064808
• Values of n such that Pi^n is farther from its closest integer than any Pi^k for 1 <= k < n.at n=12A080072
• Least k such that decimal representation of k*n contains only digits 0 and 7.at n=37A096686
• Number of walks within N^3 (the first octant of Z^3) starting at (0,0,0) and consisting of n steps taken from {(-1, 0, 1), (0, -1, 1), (0, 0, 1), (0, 1, -1), (1, 0, 0)}.at n=8A150144
• Number of n X 3 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,4,1,0,1 for x=0,1,2,3,4.at n=7A197524
• T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,4,1,0,1 for x=0,1,2,3,4.at n=47A197529
• T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,4,1,0,1 for x=0,1,2,3,4.at n=52A197529
• Left edge of the triangle A045975.at n=34A204556
• Number of n X 3 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=6A207712
• T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=42A207717
• Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 0 1 horizontally and 0 0 1 and 1 0 0 vertically.at n=2A207722
• T(n,k)=Number of nXk 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.at n=42A207741
• Number of 7Xn 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 0 vertically.at n=2A207745
• Triangle of coefficients of polynomials u(n,x) jointly generated with A209163; see the Formula section.at n=51A209162
• 36-gonal numbers: a(n) = n*(17*n-16).at n=35A282853