19660

Appears in sequences

• Alkyl naphthalenes C_{n+10} H_{2n+8} with n+10 carbon atoms.at n=9A000647
• Increasing length runs of consecutive composite numbers (endpoints).at n=11A008995
• Numbers whose base-4 representation contains exactly four 0's and three 3's.at n=29A045084
• Numbers k such that x^k + x^9 + 1 is irreducible over GF(2).at n=46A057479
• List of codewords in binary lexicode with Hamming distance 7 written as decimal numbers.at n=19A075937
• Number of positions that are exactly n moves from the starting position in the Rubik's UFO puzzle.at n=16A079820
• Expansion of (1-x^2)/((1-2*x)*(1+x^2)).at n=15A100088
• 1 / (A010684(n)/A016116(n+5) - 1/A112033(n)).at n=30A112034
• Numerator of Hermite(n, 2/7).at n=4A158981
• Record values in A180076.at n=43A180080
• Numbers k for which there are no prime numbers in the range (k-4*sqrt(sqrt(k)), k].at n=13A192320
• Number of (n+1) X 2 0..3 arrays with every 2 X 3 or 3 X 2 subblock having exactly three counterclockwise and three clockwise edge increases.at n=3A206130
• Number of (n+1) X 5 0..3 arrays with every 2 X 3 or 3 X 2 subblock having exactly three counterclockwise and three clockwise edge increases.at n=0A206133
• T(n,k) = number of (n+1) X (k+1) 0..3 arrays with every 2 X 3 or 3 X 2 subblock having exactly three counterclockwise and three clockwise edge increases.at n=6A206137
• T(n,k) = number of (n+1) X (k+1) 0..3 arrays with every 2 X 3 or 3 X 2 subblock having exactly three counterclockwise and three clockwise edge increases.at n=9A206137
• Number of representations of n as a sum of products of distinct pairs of positive integers, considered to be equivalent when terms or factors are reordered.at n=43A211856
• Decimal representation of the middle column of the "Rule 147" elementary cellular automaton starting with a single ON (black) cell.at n=14A262864
• Where record values occur in A276781, when starting from A276781(2)=1.at n=51A276782
• Decimal representation of the x-axis, from the origin to the right edge, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 513", based on the 5-celled von Neumann neighborhood.at n=14A282807
• a(n) = a(n-2) + 4*a(n-3) - 4*a(n-5), where a(0) = 1, a(1) = 4, a(2) = 7, a(3) = 12, a(4) = 19, a(5) = 28.at n=19A297554