23607

Appears in sequences

• Expansion of 1/(sqrt(1-4*x) + sqrt(1-2*x-3*x^2) - 1).at n=7A115968
• Number of base 17 circular n-digit numbers with adjacent digits differing by 7 or less.at n=4A125429
• Triangle T(n,k) with the coefficient of [x^k] of the series (1-x)^(n+1)* Sum_{j>=0} binomial(n + 4*j, 4*j)*x^j in row n, column k.at n=36A178619
• Triangle read by rows: T(n,m) is the number of quaternary words of length n with m strictly increasing runs (0 <= m <= n).at n=42A265644
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 371", based on the 5-celled von Neumann neighborhood.at n=32A271456
• Number of n X 1 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.at n=7A278547
• T(n,k)=Number of nXk 0..3 arrays with rows and columns in lexicographic nondecreasing order but with exactly two mistakes.at n=28A278553
• T(n,k)=Number of nXk 0..3 arrays with rows in nondecreasing lexicographic order and columns in nonincreasing lexicographic order, but with exactly two mistakes.at n=28A278798
• Number of nX7 0..1 arrays with every element equal to 0, 1, 2, 4 or 7 king-move adjacent elements, with upper left element zero.at n=15A298493
• Square array T(n,k), n>=0, k>=0, read by antidiagonals downwards, where column k is the expansion of 1/(1 - 9*x*(1 + x)^k)^(1/3).at n=41A361839
• Expansion of 1/(1 - 9*x*(1+x)^3)^(1/3).at n=5A361842