554749

Appears in sequences

• Quasi-Carmichael numbers to base 6: squarefree composites n such that (n,2*3*5) = 1 and prime p|n ==> p-6|n-6.at n=2A029557
• a(0) = 0, a(1) = 1. Thereafter, a(n) = a(n-1) + a(n-2) converted to base n, read in base n+1.at n=25A380976