87039

Appears in sequences

• a(n) = a(n-1) + 2*a(floor(n/2)) if n > 0, otherwise 1.at n=43A058039
• a(n) = floor(Pi^n mod n^Pi).at n=38A066434
• Matrix cube-root of triangle A107717.at n=30A107719
• First of quadruples of consecutive happy numbers.at n=12A194352