65205

Appears in sequences

• Expansion of e.g.f. arcsin(log(x+1) - arcsinh(x)).at n=9A013271
• E.g.f. sinh(log(x+1) - arcsinh(x)) = -1/2!*x^2 + 3/3!*x^3 - 6/4!*x^4 + 15/5!*x^5 + ...at n=9A013275
• Numbers k such that phi(k)*sigma(k) is a cube.at n=21A114077
• Number of rationals in [0, 1) consisting just of repeating bits of period at most n.at n=14A119917
• A convolution triangle of numbers obtained from A036224.at n=17A132166
• Number of n X n binary matrices, symmetric under horizontal reflection, with no more than 3 ones in any 2 X 2 subblock.at n=6A141509
• Number of (n+1) X 3 0..2 arrays with every 2 X 2 subblock summing to 4.at n=8A183625
• Number of subsets of {1..n} not forming a finite arithmetic progression.at n=16A389813