42312

Appears in sequences

• Expansion of e.g.f. exp(tanh(x)*exp(x)).at n=9A009268
• Expansion of g.f. -2*x/(1 - 5*x - sqrt(1-4*x) + x*sqrt(1-4*x) + 2*x^2).at n=10A078483
• Numbers k such that the concatenation of k with k-8 gives a square.at n=6A115435
• Numbers k such that k concatenated with k-9 gives the product of two numbers which differ by 2.at n=6A116095
• Number of permutations of 1..n with all differences of elements separated by distances 1 through 5 being respectively unique.at n=14A170811
• Number of active (ON, black) cells at stage 2^n-1 of the two-dimensional cellular automaton defined by "Rule 777", based on the 5-celled von Neumann neighborhood.at n=7A273444
• Number of cyclic subgroups of the group GL(2, Z(n)), counting conjugates as distinct.at n=33A316560
• Expansion of Product_{k>=1} 1/(1 - Sum_{j=1..k} x^(j*k)).at n=29A319758