A276777 The triangle in A039754 but with rows truncated at k = n.

1, 1, 1, 1, 2, 1, 1, 3, 3, 6, 1, 4, 6, 19, 27, 1, 5, 10, 47, 131, 472, 1, 6, 16, 103, 497, 3253, 19735, 1, 7, 23, 203, 1606, 18435, 221778, 2773763, 1, 8, 32, 373, 4647, 91028, 2074059, 51107344, 1245930065

Offset

0,5

Comments

See A039754 for further information.

Links

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

Jan Brandts, A. Cihangir, Enumeration and investigation of acute 0/1-simplices modulo the action of the hyperoctahedral group, arXiv preprint arXiv:1512.03044 [math.CO], 2015.

H. Fripertinger, Enumeration, construction and random generation of block codes, Designs, Codes, Crypt., 14 (1998), 213-219.

H. Fripertinger, Isometry Classes of Codes

Example

Triangle begins:
1,
1,1,
1,2,1,
1,3,3,6,
1,4,6,19,27,
1,5,10,47,131,472,
1,6,16,103,497,3253,19735,
1,7,23,203,1606,18435,221778,2773763,
1,8,32,373,4647,91028,2074059,51107344,1245930065,
...

Crossrefs

Cf. A039754.

Sequence in context: A293304 A152414 A184834 * A219876 A216655 A242884

Adjacent sequences: A276774 A276775 A276776 * A276778 A276779 A276780

Keyword

nonn,tabl

Author

N. J. A. Sloane, Sep 17 2016

Status

approved