A052313 Triangle read by rows: matrix square of A047996.

1, 2, 1, 3, 2, 1, 4, 3, 2, 1, 6, 5, 5, 2, 1, 8, 7, 8, 5, 2, 1, 14, 13, 18, 13, 7, 2, 1, 20, 19, 30, 25, 16, 7, 2, 1, 36, 35, 64, 59, 44, 21, 9, 2, 1, 60, 59, 120, 129, 102, 57, 28, 9, 2, 1, 108, 107, 244, 291, 260, 159, 86, 33, 11, 2, 1, 188, 187, 470, 629, 620, 417, 246, 107

Offset

0,2

Links

Table of n, a(n) for n=0..73.

Index entries for sequences related to necklaces

Example

1; 2,1; 3,2,1; 4,3,2,1; 6,5,5,2,1; ...

Crossrefs

Sequence in context: A249822 A200082 A052310 * A271355 A211230 A049085

Adjacent sequences: A052310 A052311 A052312 * A052314 A052315 A052316

Keyword

nonn,tabl

Author

Christian G. Bower, Dec 15 1999

Status

approved