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A026778 Sum{T(i,j)}, 0<=i<=n, 0<=j<=n, T given by A026769. 0
1, 3, 7, 16, 35, 78, 171, 383, 849, 1919, 4301, 9807, 22193, 50993, 116349, 269094, 618277, 1437916, 3323277, 7764996, 18035275, 42304904, 98668223, 232198092, 543453693, 1282401208, 3010275001, 7119589730, 16753996391 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,2

LINKS

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

CROSSREFS

Sequence in context: A240745 A227682 A099325 * A023523 A065979 A106463

Adjacent sequences:  A026775 A026776 A026777 * A026779 A026780 A026781

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified April 19 01:29 EDT 2019. Contains 322237 sequences. (Running on oeis4.)