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A038341 Fourth line of 5-wave sequence A038201. 0
1, 2, 14, 29, 175, 365, 2163, 4516, 26703, 55759, 329615, 688286, 4068623, 8495917, 50221212, 104869718, 619907431, 1294463368, 7651850657, 15978257251, 94450905714, 197228218022, 1165858298498, 2434493909304, 14390815650209 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..24.

F. v. Lamoen, Wave sequences

FORMULA

G.f.: (x^3+x^2-2*x-1) / (x^10-9*x^8+28*x^6-35*x^4+15*x^2-1). - Alois P. Heinz, Jul 16 2009

MAPLE

a:= n-> (Matrix([[`if`(irem(n, 2)=0, 1, 2), 0, 0, 0, -1]]). Matrix(5, (i, j)-> if i=j-1 then 1 elif j=1 then [15, -35, 28, -9, 1][i] else 0 fi) ^iquo(n, 2))[1, 1]: seq(a(n), n=0..30); # Alois P. Heinz, Jul 16 2009

CROSSREFS

Sequence in context: A157023 A101554 A057018 * A075718 A259710 A093794

Adjacent sequences:  A038338 A038339 A038340 * A038342 A038343 A038344

KEYWORD

nonn,easy

AUTHOR

Floor van Lamoen

EXTENSIONS

More terms from Alois P. Heinz, Jul 16 2009

STATUS

approved

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Last modified September 17 01:53 EDT 2021. Contains 347478 sequences. (Running on oeis4.)