19114

Appears in sequences

• a(n) is the concatenation of n and 6n.at n=18A009440
• Numbers whose base-2 representation has exactly 14 runs.at n=1A043581
• Numbers k such that A081252(m)/m^2 has a local minimum for m = k.at n=13A081253
• Multiples of 19 containing a 19 in their decimal representation.at n=36A121039
• Ceiling(4*Pi*n^2).at n=38A135971
• Binomial transform of A169609.at n=13A168673
• a(n) = a(n-1) + 2*a(n-2) with a(0)=3, a(1)=4.at n=13A171160
• Number of partitions p of n such that the number of distinct parts is a part and max(p) - min(p) is not a part.at n=43A241389
• Number of (6+1) X (n+1) 0..1 arrays with nondecreasing x(i,j)-x(i,j-1) in the i direction and nondecreasing min(x(i,j),x(i-1,j)) in the j direction.at n=21A250660
• Decimal representation of the n-th iteration of the "Rule 163" elementary cellular automaton starting with a single ON (black) cell.at n=7A266753
• Expansion of -1/(1 - x)^2 + (1/(1 - x))*Product_{k>=1} (1 + x^k).at n=46A317910
• Number of ways to split a strict integer partition of n into consecutive subsequences with strictly decreasing sums.at n=43A318684
• Numbers with arithmetic derivative which is a palindromic prime number (A002385).at n=30A359332
• Irregular triangle read by rows: T(n,k) is the number of inequivalent connected induced k-vertex subgraphs of the hypercube graph of dimension n >= 0, 1 <= k <= 2^n.at n=52A369605
• a(n) = (7*2^n - 9 + 5*(-1)^n) / 6.at n=13A392003