OFFSET
1,3
COMMENTS
T(n+1,k) = T(n,k) for k = 1 .. A261727(n).
LINKS
Reinhard Zumkeller, Rows n = 1..20 of triangle, flattened
EXAMPLE
. n | T(n,*) | A261646(n)
. ----+------------------------------------------------------+-----------
. 1 | 1 | 1
. 2 | 1 | 1
. 3 | 3 | 1
. 4 | 1,5,8 | 3
. 5 | 1,5,9,12,15 | 5
. 6 | 3,8,13,20,25,28,31 | 7
. 7 | 3,8,13,17,24,29,33,37,41,44,47,52,57,60,63 | 15
. 8 | 2,6,10,15,24,29,33,40,47,52,57,62,66,70,77,81,85,... | 27
. 9 | 4,12,20,25,30,34,38,47,52,57,62,66,70,77,84,91,... | 49
. 10 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 90
. 11 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 171
. 12 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 326
. 13 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 613
. 14 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 1174
. 15 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 2255
. 16 | 2,6,10,15,24,29,33,37,45,50,55,60,68,76,84,93,98,... | 4333 .
PROG
(Haskell)
a261712 n k = a261712_tabf !! (n-1) !! (k-1)
a261712_row n = a261712_tabf !! (n-1)
a261712_tabf = map reverse a261644_tabf
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Reinhard Zumkeller, Aug 31 2015
STATUS
approved