AW: Re: Tribonacci related sequences.

[Creighton Dement]

Thanks!

Somewhat to my surprise, I not only found the g.f. but even a match when
looking up one of the sequences from the same batch (further down the
page "UnknownTrib.html"):   2kbaseforcycrokseq:   0, 2, -3, 5, -12, 24,
-43, 79

If the link to A027052 is followed one discovers the comment:
Many columns of T (in triangular form) are A001590, a tribonacci
sequence.

Sincerely, 
Creighton 

Report on [ -2,3,-5,12,-24,43,-79,148,-274,503,-925,1704,-3136,5767]:
Many tests are carried out, but only potentially useful information
(if any) is reported here.


                                      2    3    4
                            2 + x + x  - x  + x
                     [- -----------------------------, ogf]
                         2              4      3    6
                        x  + 1 + 2 x + x  + 2 x  + x



TEST: APPLY VARIOUS TRANSFORMATIONS TO SEQUENCE AND
CHECK AGAINST FIRST DIFFERENCES OF SEQUENCES IN OEIS

        SUCCESS
        (limited to 40 matches):

Transformation T025 gave a match with first differences of:
%I A027054
%S A027054
1,8,23,52,107,210,401,754,1405,2604,4811,8872,16343,30086,55365,
%T A027054 101862,187385,344688,634015,1166172,2144963,3945242,7256473,
%U A027054
13346778,24548597,45151956,83047443,152748112,280947631,516743310
%N A027054 T(n,n+3), T given by A027052.
%Y A027054 Adjacent sequences: A027051 A027052 A027053 this_sequence
A027055 A027056 A027057
%Y A027054 Sequence in context: A003342 A047719 A033951 this_sequence
A048467 A002765 A048770
%K A027054 nonn
%O A027054 3,2
%A A027054 Clark Kimberling (ck6(AT)evansville.edu)


List of transformations used:
T025  sequence u[j]+u[j+2]