a(n) is the n-th term of the n-fold self-convolution of the twice left-shifted tribonacci sequence (A000073).
A341266
a(n) is the n-th term of the n-fold self-convolution of the twice left-shifted tribonacci sequence (A000073).
Terms
- a(0) =1a(1) =1a(2) =5a(3) =25a(4) =125a(5) =646a(6) =3395a(7) =18054a(8) =96885a(9) =523600a(10) =2845700a(11) =15537457a(12) =85160387a(13) =468279280a(14) =2582140370a(15) =14272523740a(16) =79056303957a(17) =438711518556
External references
- oeis: A341266