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A027958 a(n) = T(n,m) + T(n,m+1) + ... + T(n,n), where m=[ (n+2)/2 ], T given by A027948. 0
1, 1, 4, 5, 20, 32, 95, 169, 424, 793, 1816, 3488, 7583, 14789, 31172, 61357, 126892, 251200, 513343, 1019921, 2068496, 4119281, 8313584, 16580800, 33358015, 66594637, 133703500, 267089189, 535524644, 1070217248, 2143959071 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..31.

FORMULA

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

CROSSREFS

Sequence in context: A182584 A240860 A059182 * A293942 A064670 A119283

Adjacent sequences:  A027955 A027956 A027957 * A027959 A027960 A027961

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified January 17 22:51 EST 2019. Contains 319251 sequences. (Running on oeis4.)