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A143420 Row sums of triangle A143419. 0
1, 8, 55, 370, 2520, 15272, 123151 (list; graph; refs; listen; history; text; internal format)
OFFSET

2,2

COMMENTS

Each term in the sequence is a sum of tetrahedral numbers.

LINKS

Table of n, a(n) for n=2..8.

FORMULA

Row sums of triangle A143419

EXAMPLE

a(5) = 370 = (20 + 165 + 165 + 20) = C(6,3) + C(11,3) + C(11,8)+ C(6,3).

CROSSREFS

Cf. A143419.

Sequence in context: A110184 A013698 A154245 * A075734 A033890 A010924

Adjacent sequences:  A143417 A143418 A143419 * A143421 A143422 A143423

KEYWORD

nonn

AUTHOR

Gary W. Adamson, Aug 14 2008

STATUS

approved

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Last modified May 27 07:44 EDT 2019. Contains 323599 sequences. (Running on oeis4.)