87802

Appears in sequences

• Form array in which n-th row is obtained by expanding (1 + x + x^2)^n and taking the 4th column from the center.at n=9A014533
• Tenth column of trinomial coefficients.at n=8A064054
• 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, 1), (0, 0, 1), (1, -1, 1), (1, 1, -1), (1, 1, 1)}.at n=8A150901
• Bases with a record -- new or tie -- smallest 'stem value' for which a prime by concatenation of decrements exists.at n=32A220402
• Irregular triangle read by rows: T(n,m) = number of lattice paths of type A^H terminating at point (n, m).at n=46A291081
• Number of rooted unlabeled trees on n nodes where each node has at most 11 children.at n=15A292556
• a(n) = Sum_{k=0..floor(n/2)} binomial(n+k-1,k) * binomial(2*k,n-2*k).at n=11A389292