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A027151 a(n) = T(n,0) + T(n,1) + ... + T(n,n), T given by A027144. 0
1, 3, 7, 21, 45, 135, 291, 873, 1881, 5643, 12159, 36477, 78597, 235791, 508059, 1524177, 3284145, 9852435, 21229047, 63687141, 137226717, 411680151, 887047443, 2661142329, 5733964809, 17201894427, 37064931183, 111194793549 (list; graph; refs; listen; history; internal format)
OFFSET

0,2

FORMULA

G.f.: (1+3x)(1+x^2)/(1-6x^2-3x^4).

CROSSREFS

Sequence in context: A119959 A018712 A183936 * A092203 A018760 A050614

Adjacent sequences:  A027148 A027149 A027150 * A027152 A027153 A027154

KEYWORD

nonn

AUTHOR

Clark Kimberling (ck6(AT)evansville.edu)

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Last modified February 17 09:17 EST 2012. Contains 206009 sequences.