6293134512

Appears in sequences

• a(n) = F(3) + F(6) + F(9) + ... + F(3n), F(n) = Fibonacci numbers A000045.at n=16A099919
• Expansion of -x/((x^2+x+1)*(x^2+3*x+1)); invert transform gives signed version of tetrahedral numbers A000292.at n=24A113067
• Partial sums of odd Fibonacci numbers (A014437).at n=31A174542
• p-INVERT of the positive integers, where p(S) = 1 - S^2.at n=24A290890
• Lower (1/2)-midsequence of (F(2n)) and (F(2n+1)), where F=A000045 (Fibonacci numbers); see Comments.at n=24A387778