A163270 - OEIS

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A163270

First column in matrix inverse of (A047999*A154990).

1

1, 1, 1, 3, 1, 3, 3, 13, 1, 3, 3, 13, 3, 13, 13, 75, 1, 3, 3, 13, 3, 13, 13, 75, 3, 13, 13, 75, 13, 75, 75, 541

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OFFSET

1,4

LINKS

Table of n, a(n) for n=1..32.

EXAMPLE

First column in the table:

1,

1,1,

1,0,1,

3,1,1,1,

1,0,0,0,1,

3,1,0,0,1,1,

3,0,1,0,1,0,1,

13,3,3,1,3,1,1,1,

CROSSREFS

Cf. It appears that A000670 = A163270(A000079).

Sequence in context: A336765 A147610 A238313 * A098743 A283484 A355567

Adjacent sequences: A163267 A163268 A163269 * A163271 A163272 A163273

KEYWORD

nonn

AUTHOR

Mats Granvik, Jul 24 2009

STATUS

approved