57455

Appears in sequences

• Number of even non-cototients not exceeding 2^n.at n=18A072297
• Collatz (or 3x+1) trajectory starting at 10087.at n=13A161022
• Least count k that deletes the alternate (odd) numbers in the Josephus problem for a circle of numbers 1, 2, 3, ... 2*n, leaving the even numbers undeleted.at n=10A198791
• Number of (n+1)X(n+1) 0..1 arrays with each 2X2 subblock having clockwise pattern 0000 0011 or 0101.at n=9A259214
• Triangle read by rows. The incomplete Bell transform of the Catalan numbers.at n=48A352366