18294

Appears in sequences

• Numbers k such that the continued fraction for sqrt(k) has even period and if the last term of the periodic part is deleted the central term is 90.at n=30A031588
• Nonisomorphic catacondensed monoheptabenzenoids (see reference for precise definition).at n=8A121075
• Numbers n with property that n^2 is a sum of some 70 successive primes.at n=27A166256
• Number of (n+1) X 3 binary arrays with rows and columns in nondecreasing order and with no 2 X 2 subblock sum differing from a horizontal or vertical neighbor subblock sum by more than one.at n=24A184064
• Triangle of coefficients of polynomials u(n,x) jointly generated with A210738; see the Formula section.at n=50A210603
• Expansion of R(x*R(x)), where R(x) = 1/(1 + x/(1 + x^2/(1 + x^3/(1 + x^4/(1 + ...))))), a continued fraction (g.f. for A007325).at n=19A295703
• Solution of the complementary equation a(n) = a(n-1) + a(n-2) + n*b(n), where a(0) = 1, a(1) = 3, b(0) = 2, b(1) = 4, b(2) = 5, and (a(n)) and (b(n)) are increasing complementary sequences.at n=14A296294
• a(n) = 27*n^2/2 + 45*n/2 - 12 (n>=1).at n=35A304375
• Number of separable partitions of n in which the number of distinct (repeatable) parts <= 6.at n=37A325715