A129636 - OEIS

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A129636

Triangle T(n,k): base-3 digit sum of the Pascal type triangle A102363(n,k).

1, 2, 1, 2, 3, 3, 4, 1, 2, 3, 4, 5, 3, 1, 3, 4, 3, 4, 4, 4, 3, 4, 5, 7, 4, 6, 5, 5, 6, 5, 4, 7, 4, 7, 4, 3, 4, 5, 5, 7, 7, 7, 9, 7, 7, 8, 3, 4, 6, 8, 4, 4, 4, 6, 7, 8, 9, 5, 4, 8, 8, 8, 6, 8, 7, 9, 10, 9, 10, 7, 4, 6, 8, 10, 8

(list; table; graph; refs; listen; history; text; internal format)

OFFSET

0,2

LINKS

Table of n, a(n) for n=0..74.

FORMULA

a(n) = A053735(A102363(n,k)). - R. J. Mathar, Sep 09 2011

EXAMPLE

..............1......................1........................1

.............2.3....................2.10.....................2.1

............4.5.7.................11.12.21..................2.3.3

...........8.9.12.15............22.100.110.120.............4.1.2.3

MAPLE

A053735 := proc(n) add(d, d=convert(n, base, 3)) ; end proc:

A102363 := proc(n, k) if k=0 then 2^n elif k=n then 2^(n+1)-1 else procname(n-1, k)+procname(n-1, k-1) end if; end proc:

A129636 := proc(n, k) A053735(A102363(n, k)) ; end proc: # R. J. Mathar, Sep 09 2011

CROSSREFS

Cf. A102363.

Sequence in context: A161269 A100405 A081366 * A242443 A214154 A048219

Adjacent sequences: A129633 A129634 A129635 * A129637 A129638 A129639

KEYWORD

base,nonn,tabl

AUTHOR

David G. Williams (davidwilliams(AT)paxway.com), Jun 09 2007

EXTENSIONS

Corrected by R. J. Mathar, Sep 09 2011

STATUS

approved