A167145 Column 0 of the matrix 5th power of triangle A167015.

1, 5, 20, 105, 755, 7206, 86895, 1264270, 21399545, 410288306, 8742115145, 204205278908, 5177537318502, 141430336450640, 4138123770051847, 129084367791600672, 4276207014911374799, 149935339089873769895

Offset

0,2

Comments

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.

Links

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

Crossrefs

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

Sequence in context: A109500 A137961 A334716 * A277032 A300490 A020039

Adjacent sequences: A167142 A167143 A167144 * A167146 A167147 A167148

Keyword

nonn

Author

Paul D. Hanna, Oct 28 2009

Status

approved