40957

Appears in sequences

• Expansion of 1/((1-4x)(1-8x)(1-9x)).at n=4A019664
• Number of (s,2) gates.at n=14A037294
• a(n) = T(4,n), array T given by A047858.at n=12A047861
• Indices of primes in sequence defined by A(0) = 33, A(n) = 10*A(n-1) + 43 for n > 0.at n=14A056255
• Let u(1)=u(2)=1, u(3)=n, u(k) = (1/2)*abs(2*u(k-1) -u(k-2)-u(k-3)); sequence gives values of n such that Sum_{k>=1} u(k) is an integer.at n=26A078113
• The number of edges on a piece of paper that has been folded n times (see comments for more precise definition).at n=25A133257
• Expansion of (1 - x + 3*x^2)/((1-x)*(1-2*x)).at n=14A154117
• Partial sums of A173862.at n=40A200672
• Numbers n such that (6k-1) for k=n, n+1, n+2, n+3 are all primes with no primes of the form (6k+1) in between.at n=35A296011