24872

Appears in sequences

• Sum along upward diagonal of Pascal triangle to center.at n=22A010752
• Sum along upward diagonal of Pascal triangle up to (but not including) center.at n=22A010753
• a(n) = T(n,0) + T(n,1) + ... + T(n,[ n/2 ]), T given by A026670.at n=14A026678
• a(n) = Sum_{j=0..n} T(n,j), T given by A026736.at n=14A026743
• a(n) = T(n,m) + T(n,m+1) + ... + T(n,n), where m=[ (n+1)/2 ], T given by A026725.at n=15A026847
• T(n,n-4), array T as in A038730.at n=7A038733
• Expansion of (1/(1-x))(1+2x/(1-x+sqrt(1-2x-3x^2))).at n=13A097332
• Number of nX3 0..2 arrays with every row and column running average nondecreasing rightwards and downwards, and the number of instances of each value within one of each other.at n=10A200772
• Beastly reciprocals, or numbers k such that digitsum(1/k) = 666.at n=39A244661
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 493", based on the 5-celled von Neumann neighborhood.at n=31A272545
• Row sums of A273751.at n=34A274248
• Expansion of g.f. A(x) satisfying A(x) = A(x^3) / A(x^2 - x^3 - x^4).at n=21A372533
• a(n) = Sum_{k=0..n} binomial(2*n+k+1,n-k).at n=7A390266