27520

Appears in sequences

• Glaisher's function V(n).at n=40A002611
• Expansion of exp(tan(x))/cosh(x).at n=9A009245
• Expansion of sin(tanh(x))/cos(x).at n=4A009526
• Number of partitions of n with equal number of parts congruent to each of 0 and 2 (mod 4).at n=50A035541
• Values that show the slow decrease in the Andrica function Af(k) = sqrt(p(k+1)) - sqrt(p(k)), where p(k) denotes the k-th prime.at n=26A084977
• Iccanobirt prime indices (6 of 15): Indices of prime numbers in A102116.at n=12A102136
• Decimal number generated by the binary bits of the n-th generation of the Rule 110 elementary cellular automaton.at n=7A117999
• Expansion of (1-x)*(1+8*x+60*x^2)/((1-2*x)*(1+2*x)*(1-4*x)).at n=6A120655
• Numbers whose binary digits, except for the first "1", are given by floor(((k-n)/n) mod 2) with 1<=k<=n.at n=14A272614
• Sum of all the parts in the partitions of n into 7 parts.at n=32A308926
• Triangle read by rows: T(n,k) (n >= 1, 3 <= k <= n+2) = number of k-sided cells in the n-th figure shown in A255011 (meaning the figure with 4n points on the perimeter).at n=45A334699
• Expansion of g.f. x*(21 + 123*x + 129*x^2 + 4*x^3 + 129*x^4 + 123*x^5 + 21*x^6)/((1 - x)^3*(1 + x + x^2 + x^3)^2).at n=40A377166