184549376

Appears in sequences

• Number of rooted planar cubic maps with 2n vertices.at n=8A002005
• a(n) = 11*4^n.at n=12A002089
• a(n) = 11*2^n.at n=24A005015
• a(n) = n*2^n - 2^n = 2^n*(n-1).at n=22A058922
• Number of subsets of {1,.., n} containing exactly one prime.at n=34A089821
• a(n) = 2^(n-1)*A047240(n).at n=23A128205
• A (4,-8) Somos-4 sequence.at n=8A178077
• Expansion of g.f. (1-5*x)/(1-16*x).at n=7A196664
• Triangle read by rows: T(n,g) is the number of rooted 2n-face triangulations in an orientable surface of genus g.at n=24A266240
• a(n) = nim-product of 2^2 and 2^n.at n=27A335159
• a(n) = nim-product of 2^3 and 2^n.at n=26A335160
• a(n) is the first number == 1 (mod n) that is the product of n primes, counted by multiplicity.at n=24A368217
• a(n) is the smallest nonnegative integer k where exactly n pairs of positive integers (x, y) exist such that x^2 + 7*y^2 = k.at n=23A374159