44388

Appears in sequences

• Number of lines through at least 2 points of an n X n grid of points.at n=21A018808
• Pisot sequence P(7,11), a(0)=7, a(1)=11, a(n+1) is the nearest integer to a(n)^2/a(n-1). Agrees with A021014 only for n <= 20.at n=20A021013
• a(n)=a(n-1)+a(n-2)-a(n-4)+a(n-5).at n=20A021014
• S(n,n) + S(n-1,n-2) + S(n-2,n-4) + ... + S(n-k+1,n-2k+2), where k = [ (n+1)/2 ] and S(i,j) are Stirling numbers of second kind.at n=13A024428
• Triangle of rooted planar maps.at n=41A046651
• a(n) = prime(n) + n^3 + n^2 + 4n - 1.at n=34A060822
• Triangle read by rows: T(n,k) is the number of nonseparable planar maps with r*n edges and a fixed outer face of r*k edges which are invariant under a rotation of 1/r for any r >= 2 (independent of actual value of r).at n=39A091599
• Structured meta-prism numbers, the n-th number from a structured n-gonal prism number sequence.at n=17A100177
• 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, 0), (1, 0, 0), (1, 0, 1), (1, 1, 0)}.at n=8A151162
• Expansion of Sum_{n>=0} x^n / Product_{k=1..2*n} (1 - k*x).at n=7A229286
• Number of (n+2)X(4+2) 0..1 arrays with every 3X3 subblock sum of the two sums of the diagonal and antidiagonal minus the two minimums of the central column and central row nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=24A254903
• Irregular triangle read by rows: T(n,k) = A344031(n,k)/2, n >= 1, 0 <= k <= 2*n-2.at n=33A344059
• Number of collapsible integer compositions of n.at n=24A353860