38350

Appears in sequences

• Number of base 30 circular n-digit numbers with adjacent digits differing by 3 or less.at n=5A125340
• E.g.f. A(x) satisfies: A( Integral 1/A(x) dx ) = exp(x).at n=7A233335
• Consider any concatenation of the type n = concat(a,b). Sequence lists numbers that are the sum of the products of some of such couples a and b.at n=37A265737
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 187", based on the 5-celled von Neumann neighborhood.at n=37A270675
• Nonsquarefree numbers k such that A003415(k) divides A276086(k), where A003415 is the arithmetic derivative, and A276086 is the primorial base exp-function.at n=45A371085
• Array read by downward antidiagonals: A(n,k) = A(n-1,k+1) + Sum_{j=0..k} binomial(k+1,j)*A(n-1,j)*A(k-j,0) with A(0,k) = 1.at n=27A392058