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Search: id:A123894
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A123894 G.f.: -(1+x^2)*(1+2*x^2)*(1+3*x^2)*(1+4*x^2)/(-1-10*x^2-35*x^4-50*x^6-24*x^8+5*x+40*x^3+105*x^5+100*x^7+24*x^9). +0
1
1, 5, 25, 115, 525, 2405, 11025, 50525, 231525, 1060979, 4862065, 22280875, 102104045, 467901065, 2144199765, 9825991725, 45028504525, 206347239279, 945605099381, 4333321849875, 19857843661645, 91000384646845, 417017585036185, 1911021221349165 (list; graph; listen)
OFFSET

0,2

REFERENCES

A. Burstein and T. Mansour, Words restricted by 3-letter ..., Annals. Combin., 7 (2003), 1-14.

LINKS

Index entries for sequences related to linear recurrences with constant coefficients

A. Burstein and T. Mansour, Words restricted by 3-letter ....

CROSSREFS

Sequence in context: A124534 A089947 A123890 this_sequence A055297 A034274 A110212

Adjacent sequences: A123891 A123892 A123893 this_sequence A123895 A123896 A123897

KEYWORD

nonn

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Nov 20 2006

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Last modified December 20 16:54 EST 2009. Contains 171081 sequences.


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