18292

Appears in sequences

• Even 10-gonal (or decagonal) numbers.at n=34A028994
• Numbers n such that the sum of the prime factors of n equals the product of the digits of n.at n=28A067173
• Number of nondecreasing arrangements of 4 nonzero numbers in -(n+2)..(n+2) with sum zero.at n=40A188334
• Number of groups of order prime(n)^6.at n=19A232106
• Free polyominoes with 2n squares, having reflectional symmetry on axis that coincides with edges.at n=9A234006
• The 300-degree spoke (or ray) of a hexagonal spiral of Ulam.at n=39A244804
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 366", based on the 5-celled von Neumann neighborhood.at n=37A268275
• a(n) = 3*p^2+39*p+344+24*gcd(p-1,3)+11*gcd(p-1,4)+2*gcd(p-1,5), where p = prime(n).at n=19A269749
• (r,1)-greedy sequence, where r(k) = k/phi^k and phi = golden ratio.at n=4A270745
• Decimal representation of the x-axis, from the left edge to the origin, of the n-th stage of growth of the two-dimensional cellular automaton defined by "Rule 205", based on the 5-celled von Neumann neighborhood.at n=28A279824
• Row sums of irregular triangle A292224. a(n) gives the total number of admissible tuples starting with 0 in the interval [0, 1, ..., n-1].at n=44A292225
• Row sums of irregular triangle A292224. a(n) gives the total number of admissible tuples starting with 0 in the interval [0, 1, ..., n-1].at n=45A292225
• Partial sums of A294016.at n=42A294017
• a(n) is the number of ways to express 2*n+1 as a sum of parts x such that x+2 is an odd prime.at n=42A333615
• Least k such that there are exactly A003586(n) ways to choose a binary index of each binary index of k.at n=41A368111
• Sorted positions of first appearances in A368109 (number of ways to choose a binary index of each binary index).at n=37A368112
• Decreasing partition array based on the fractional parts of tan(n); see Comments.at n=45A389579