87720

Appears in sequences

• Integer part of log(n!)^(1 + log(1 + log(n))).at n=35A062443
• Nearest integer to log(n!)^(1 + log(1 + log(n))).at n=35A062444
• Numbers k such that 10^k - 3 is prime.at n=12A089675
• Absolute discriminants of complex quadratic fields with 3-class group of type (3,3) and 3-principalization type (4224).at n=18A247690
• Least positive integer k such that k and k*n are terms of A259539.at n=26A259540
• Numbers n such that n-19, n-1, n+1 and n+19 are consecutive primes.at n=5A262668
• Convolution of the odd-indexed triangular numbers (A000384(n+1)) and the squares (A000290).at n=16A277229
• Place n equally spaced points around the circumference of a circle and then, for each pair of points, draw two distinct circles, whose radii are the same as the first circle, such that both points lie on their circumferences. The sequence gives the total number of regions formed.at n=29A371374