113575

Appears in sequences

• 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, -1, 0), (0, 0, 1), (0, 1, 1), (1, 0, 1), (1, 1, -1)}.at n=8A151180
• Perimeter s/6 (divided by 6) of primitive Pythagorean triangles such that perimeters are Averages of twin prime pairs, q=p+1, a=q^2-p^2, c=q^2+p^2, b=2*p*q, s=a+b+c, s-+1 are primes.at n=26A155176
• Rectified heptapeton (6-simplex) numbers: the coefficient of x^(2n-2) in (1+x+x^2+...+x^(n-1))^7.at n=10A179097
• Second elementary symmetric function of the first n terms of (1,1,2,2,3,3,4,4,...).at n=41A203246
• Number of (w,x,y,z) with all terms in {1,...,n} and w+x<y+z.at n=22A212523
• Number of (n+1)X(2+1) arrays of permutations of 0..n*3+2 with each element having directed index change 2,-1 1,0 2,1 0,-1 -2,-2 or -1,0.at n=9A264485
• Odd numbers k > 1 such that A309906(k-1) < A309906(k) > A309906(k+1) < A309906(k+2) > A309906(k+3).at n=30A349938