A167685 Triangle read by rows given by [1,1,1,1,1,1,1,1,1,1,...] DELTA [1,1,0,0,0,0,0,0,0,0,0,...] where DELTA is the operator defined in A084938.

1, 1, 1, 2, 4, 2, 5, 14, 13, 4, 14, 48, 62, 36, 8, 42, 165, 264, 217, 92, 16, 132, 572, 1066, 1104, 670, 224, 32, 429, 2002, 4186, 5130, 3965, 1912, 528, 64, 1430, 7072, 16184, 22576, 20858, 12904, 5168, 1216, 128

Offset

0,4

Links

Table of n, a(n) for n=0..44.

Formula

T(n,0)= A000108(n).

Example

Triangle begins :
1 ;
1,1 ;
2,4,2 ;
5,14,13,4 ;
14,48,62,36,8 ;
42,165,264,217,92,16 ; ...

Crossrefs

Cf. A000108, A039599, A167656,

Sequence in context: A233131 A202395 A117903 * A268740 A120493 A085880

Adjacent sequences: A167682 A167683 A167684 * A167686 A167687 A167688

Keyword

nonn,tabl

Author

Philippe Deléham, Nov 09 2009

Status

approved