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A167145 Column 0 of the matrix 5-th power of triangle A167015. 4
1, 5, 20, 105, 755, 7206, 86895, 1264270, 21399545, 410288306, 8742115145, 204205278908, 5177537318502, 141430336450640, 4138123770051847, 129084367791600672, 4276207014911374799, 149935339089873769895 (list; graph; refs; listen; history; text; internal format)



This sequence equals the reversal of row 5 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.


Table of n, a(n) for n=0..17.


Cf. A167015, A167016, A167142, A167143, A167144.

Sequence in context: A165961 A109500 A137961 * A020039 A207972 A117736

Adjacent sequences:  A167142 A167143 A167144 * A167146 A167147 A167148




Paul D. Hanna, Oct 28 2009



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Last modified December 21 10:06 EST 2014. Contains 252304 sequences.