User:Georgi Guninski/seqs

Sequences:

• Relations in a sequence (1)
• A180435 a(n) = a(n-1)*2^n+n, a(0)=1.
  • copy of A180435
• A171920 Numbers n with at least one solution to n=x*y*z, x+y-z=1 with ordered triples (x,y,z), x,y,z>=1.
  • Records
• A175841 Fast "exotic addition" a o b = ( a(1)+b(1) , a(1)*b(2)+a(2)*b(1) )