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A027964 T(n,n+4), T given by A027960. 5
1, 7, 26, 73, 174, 373, 743, 1404, 2552, 4506, 7784, 13226, 22193, 36889, 60882, 99947, 163430, 266455, 433495, 704150, 1142496, 1852212, 3001056, 4860468, 7869649, 12739243, 20619098, 33369709, 54001422, 87385081 (list; graph; refs; listen; history; text; internal format)
OFFSET

4,2

LINKS

Table of n, a(n) for n=4..33.

FORMULA

G.f.: x^4(1+2x)/[(1-x)^4*(1-x-x^2)]. - Ralf Stephan, Feb 07 2004

CROSSREFS

Sequence in context: A053346 A227021 A180669 * A183957 A078501 A247557

Adjacent sequences:  A027961 A027962 A027963 * A027965 A027966 A027967

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified January 20 02:13 EST 2019. Contains 319320 sequences. (Running on oeis4.)