19676

Appears in sequences

• Number of Hamiltonian paths in a 4 X (2n+1) grid starting at the lower left corner and finishing in the upper right corner.at n=6A014523
• Numbers whose base-3 representation contains exactly one 0 and no 1's.at n=35A044970
• Indices of primes in sequence defined by A(0) = 43, A(n) = 10*A(n-1) + 33 for n > 0.at n=26A101730
• Numbers n such that the numerator of Sum_{i=1..n} (1/i^2), in reduced form, is prime.at n=34A111354
• Triangle read by rows: T(n,k) is the number of deco polyominoes of height n having along the lower contour exactly k reentrant corners, i.e., a vertical step that is followed by a horizontal step (n>=1, k>=0).at n=17A121579
• Monotonic ordering of nonnegative differences 3^i-7^j, for 40>= i>=0, j>=0.at n=28A192153
• Number of -2..2 arrays x(i) of n+1 elements i=1..n+1 with set{t,u,v in 0,1}((x[i+t]+x[j+u]+x[k+v])*(-1)^(t+u+v)) having two, three, four, five or six distinct values for every i,j,k<=n.at n=6A211580
• Square array A(n,k), n>=0, k>=0, read by antidiagonals, where column k is the exponential transform of the k-th powers.at n=50A279636
• Exponential transform of the fourth powers A000583.at n=5A279637
• Number of symmetrical fountains of n coins.at n=37A288005
• Number of length-n binary words with no even palindrome of length > 6 and no odd palindrome of length > 3.at n=34A330131
• Expansion of (1/x) * Series_Reversion( x*(1-x-x^5)/(1-x) ).at n=23A366112
• Consecutive states of the linear congruential pseudo-random number generator for the Texas Instruments TI99 when started at 1.at n=11A384221