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A026679 Sum{T(i,j)}, 0<=i<=n, 0<=j<=n, T given by A026670. 0
1, 3, 8, 18, 41, 87, 190, 396, 851, 1761, 3754, 7740, 16419, 33777, 71410, 146676, 309319, 634605, 1335680, 2737830, 5753393, 11784519, 24732602, 50628768, 106142095, 217168749, 454874296, 930285390, 1947021505 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

Table of n, a(n) for n=0..28.

CROSSREFS

Partial sums of A026677.

Sequence in context: A117080 A240135 A066425 * A191524 A026756 A341583

Adjacent sequences:  A026676 A026677 A026678 * A026680 A026681 A026682

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified May 13 23:41 EDT 2021. Contains 343868 sequences. (Running on oeis4.)