A045430 Number of dominoes with n spots (in standard set).

1, 1, 2, 2, 3, 3, 4, 3, 3, 2, 2, 1, 1

Offset

0,3

Links

Table of n, a(n) for n=0..12.

Index entries for sequences related to dominoes

Example

a(3)=2 since there are two dominoes with three spots: 2,1 and 3,0.

Crossrefs

Cf. A008967 where rows are equivalent sequences for zero to n spots in each half-domino (in this standard case: 6)

Sequence in context: A306949 A189025 A236347 * A067693 A322006 A173419

Adjacent sequences: A045427 A045428 A045429 * A045431 A045432 A045433

Keyword

easy,fini,full,nonn

Author

Henry Bottomley, Aug 23 2000

Status

approved