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A167143 Column 0 of the matrix cube of triangle A167015. 3
1, 3, 9, 43, 312, 3121, 39616, 602135, 10547538, 207620746, 4514623895, 107150379369, 2751648614456, 75953000041971, 2241736112814551, 70446370941793711, 2348550874184397643, 82802885494751780415 (list; graph; refs; listen; history; text; internal format)
OFFSET
0,2
COMMENTS
This sequence equals the reversal of row 3 of A167015 (when infinitely extended to the left), and then shifted left 1 place.
In triangle T=A167015, row n of T equals the initial n terms in column 0 of matrix power T^n, reversed and with an appended '1'.
The definition of A167015 may be relaxed to allow the triangle to extend indefinitely also to the left, making each row infinite.
LINKS
CROSSREFS
Cf. A167015, other rows: A167016, A167142, A167144, A167145.
Sequence in context: A154606 A369387 A232216 * A136732 A108239 A218921
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Oct 28 2009
STATUS
approved

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Last modified June 17 07:06 EDT 2024. Contains 373433 sequences. (Running on oeis4.)