30398

Appears in sequences

• Expansion of (1 - sqrt((1-2*x)*(1-6*x)))/(2*x*(2-3*x)).at n=8A033543
• Number of subsets of {1, ..., n} that are not sum-free.at n=15A088809
• Average of 4 primes where the integer Schwarzian derivative is zero.at n=30A094903
• Triangle read by rows: row n is the first row of the matrix M[n]^(n-1), where M[n] is the n X n tridiagonal matrix with main diagonal (2,4,4,...) and super- and subdiagonals (1,1,1,...).at n=36A124575
• Riordan array (f(x), x*f(x)) where f(x) is the g.f. of A033543.at n=36A171515
• a(n) is the number of n-walks between the vertices 1 and 3 of the Graph on the chalkboard in 'Good Will Hunting', (1997).at n=11A187734
• Fibonacci sequence beginning 13, 11.at n=17A206607
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 54", based on the 5-celled von Neumann neighborhood.at n=43A270024
• Number of binary strings of length n which have more 01 than 00 substrings.at n=16A371564