16475640049
domain: N
Appears in sequences
- Indices of triangular numbers which are also heptagonal.at n=8A039835
- a(n) = (F(3*n+1) - 1)/2, where F=A000045 (the Fibonacci sequence).at n=17A049651
- p-INVERT of the positive integers, where p(S) = 1 - S^2.at n=25A290890
- a(n) = 3*a(n-1) + 5*a(n-2) + a(n-3), with a(0) = a(1) = 1 and a(2) = 7, a linear recurrence which is a trisection of A005252.at n=17A294262
- Expansion of (1 - x + x^2)/((1 - x + x^2)^2 - 4*x^2).at n=25A376716
- Lower (1/2)-midsequence of (F(2n)) and (F(2n+1)), where F=A000045 (Fibonacci numbers); see Comments.at n=25A387778