18465

Appears in sequences

• Numbers k such that 51*2^k+1 is prime.at n=35A032375
• The largest part summed over all partitions of n in which every integer from the smallest part to the largest part occurs.at n=47A117469
• Subgroups of nimber addition interpreted as binary numbers.at n=44A190939
• Records in A268642.at n=23A268529
• a(n) is the number of reducible monic quartic polynomials (x^4 + r*x^3 + s*x^2 + t*x + u) with integer coefficients bounded by naïve height n (abs(r), abs(s), abs(t), abs(u) <= n).at n=8A358399
• a(n) is the smallest positive integer which can be represented as the sum of distinct nonzero dodecahedral numbers in exactly n ways, or -1 if no such integer exists.at n=5A360216
• Number of nonnegative sequences of integers S with the properties that (1) sum(S) + length(S) = n and (2) there exists a nonnegative sequence whose Euler transform begins with S starting at index 1.at n=19A367205