27400

Appears in sequences

• Numbers k such that 145*2^k+1 is prime.at n=22A032422
• Triangular array generated by its row sums: T(n,0) = 1 for n >= 0, T(n,1) = r(n-1), T(n,k) = T(n,k-1) - (-1)^k * r(n-k) for k = 2, 3, ..., n, n >= 2, r(h) = sum of the numbers in row h of T.at n=46A054090
• Row sums of A054090.at n=8A054091
• Row sums of array A097306.at n=43A097307
• Numbers k such that lcm(1,2,3,...,k)/13 equals the denominator of the k-th harmonic number H(k).at n=26A112818
• Number of binary strings of length n with no substrings equal to 0001 0101 or 1110.at n=22A164475
• Number of (n+1)X4 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases.at n=4A206201
• Number of (n+1)X6 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases.at n=2A206203
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases.at n=23A206206
• T(n,k)=Number of (n+1)X(k+1) 0..3 arrays with every 2X3 or 3X2 subblock having exactly one clockwise edge increases.at n=25A206206
• a(n) = n*(n+1)*(11*n +10)/6.at n=24A254407
• Molien series for invariants of finite Coxeter group A_11.at n=57A266780
• Noncube integers n such that n^2 + 1 is the sum of 2 positive cubes.at n=12A267119
• Numbers m > 0 that have a divisor d > 1 with binomial(m+d, d) == 1 mod m.at n=46A290040
• Numbers k such that (14*10^k + 229)/9 is prime.at n=18A294940
• Number of multiples of n which have only distinct and nonzero digits in base 10.at n=25A328287
• The number of closed lambda calculus terms of size n that have a normal form, where size(lambda M)=2+size(M), size(M N)=2+size(M)+size(N), and size(V)=1+i for a variable V bound by the i-th enclosing lambda.at n=25A333958