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A049833 a(n)=T(2n-1,n)+T(2n,n+1)+...+T(3n-3,2n-2)=sum over a period of n-th diagonal of array T given by A049828. 0
0, 1, 5, 13, 23, 40, 54, 80, 104, 131, 161, 209, 231, 288, 332, 376, 426, 499, 549, 631, 673, 748, 826, 940 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

LINKS

Table of n, a(n) for n=1..24.

CROSSREFS

Sequence in context: A031336 A099958 A213483 * A083800 A075829 A119248

Adjacent sequences:  A049830 A049831 A049832 * A049834 A049835 A049836

KEYWORD

nonn

AUTHOR

Clark Kimberling

STATUS

approved

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Last modified March 25 12:11 EDT 2019. Contains 321470 sequences. (Running on oeis4.)