18602

Appears in sequences

• Cycle class sequence c(n) (the number of true cycles of length n in which a certain node is included) for zeolite BOG = Boggsite Na4Ca7[Al18Si78O192].74H2O starting with a T2 atom.at n=13A019082
• a(1)=1, a(n) = ceiling(r(3)*a(n-1)) where r(3) = (1/2)*(3 + sqrt(13)) is the positive root of X^2 = 3*X + 1.at n=8A082574
• Numbers n such that p(9n) is prime, where p(n) is the number of partitions of n.at n=27A114169
• Expansion of 1/(1-x-x^2-x^10+x^12).at n=21A147659
• Partial sums of A039765.at n=6A174436
• Partial sums of the number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 318", based on the 5-celled von Neumann neighborhood.at n=35A271252
• Number of alternately co-strong integer partitions of n.at n=42A317256
• Positive integers that have exactly ten representations of the form 1 + p1 * (1 + p2* ... * (1 + p_j)...), where [p1, ..., p_j] is a (possibly empty) list of distinct primes.at n=13A317400
• Number of compositions (ordered partitions) of n into distinct parts, the least being 4.at n=46A339165
• Numbers of the form prime(w)*prime(x)*prime(y) with w >= x >= y such that 2w = 3x + 4y.at n=29A358102
• Triangle read by rows: Riordan array (1/(1 - x), (1 + x)/(1 - x - x^2)).at n=50A371300