A169589 A number triangle with repeated columns of triangle in A039599.

1, 1, 1, 2, 1, 1, 5, 2, 3, 1, 14, 5, 9, 3, 1, 42, 14, 28, 9, 5, 1, 132, 42, 90, 28, 20, 5, 1, 429, 132, 297, 90, 75, 20, 7, 1, 1430, 429, 1001, 297, 275, 75, 35, 7, 1, 4862, 1430, 3432, 1001, 1001, 275, 154, 35, 9, 1, 16796, 4862, 11934, 3432, 3640, 1001, 637, 154, 54, 9, 1

Offset

0,4

Comments

Row sums : A135339.

Links

Table of n, a(n) for n=0..65.

Formula

Sum_{k, 0<=k<=n} T(n,k)= A135339(n+1). T(n,0)= A000108(n).

Example

Triangle begins : 1 ; 1,1 ; 2,1,1 ; 5,2,3,1 ; 14,5,9,3,1 ; 42,14,28,20,5,1 ; ...

Crossrefs

Cf. A000012, A109613, A000108

Sequence in context: A307877 A259703 A316996 * A003570 A011281 A300731

Adjacent sequences: A169586 A169587 A169588 * A169590 A169591 A169592

Keyword

nonn,tabl

Author

Philippe Deléham, Dec 02 2009

Extensions

Corrected by Philippe Deléham, Dec 04 2009

Status

approved