39796

Appears in sequences

• Sum(C(j)*(n-j)*4^(n-j-1),j=0..n-1), C = Catalan numbers.at n=7A018218
• A triangle related to A000108 (Catalan) and A000302 (powers of 4).at n=38A046527
• Numbers k such that 2^k + 3 is prime.at n=41A057732
• T(n,k) = right- or upward-moving paths connecting opposite corners of an n X n chessboard, visiting the diagonal at k points between start and finish.at n=29A075435
• Riordan array (1/((1-4*x)*c(x)),x*c(x)/sqrt(1-4*x)), c(x) the g.f. of A000108.at n=38A113955
• Number of base 12 n-digit numbers with adjacent digits differing by four or less.at n=5A126507
• Number of n-game win/loss series that contain at least one dead game.at n=15A180967
• Row sums of the triangular array A246696.at n=42A246697
• Numbers that are nontrivially palindromic in three or more consecutive integer bases.at n=19A279093
• Total number of consecutive triples matching the pattern 123 in all faro permutations of length n.at n=16A340569