A242626 -id:A242626 - cp's OEIS frontend

A242844 Number of compositions of n with difference 4 between the number of odd parts and the number of even parts, both counted without multiplicity.

24, 60, 144, 330, 684, 1374, 2688, 5106, 9532, 17208, 30856, 55296, 97812, 175926, 316928, 581352, 1083674, 2064346, 4012614, 7957492, 16061208, 32880201, 68032764, 141844516, 297086796, 623794222, 1310685218, 2752470170, 5772036942, 12079693049, 25220161732

Offset: 16

Alois P. Heinz, May 23 2014

nonn

First odd term is a(37) = 32880201.

			a(16) = 24 = 4!: all permutations of {1,3,5,7}.

Alois P. Heinz, Table of n, a(n) for n = 16..500

Column k=4 of A242626.

A242845 Number of compositions of n with difference 5 between the number of odd parts and the number of even parts, both counted without multiplicity.

Original entry on oeis.org

120, 360, 960, 2400, 5364, 11520, 23904, 48000, 94308, 181824, 344832, 643104, 1186224, 2169048, 3928932, 7096092, 12764310, 22970448, 41423646, 75112044, 137278356, 253642356, 474883278, 902578368, 1743300754, 3421941228, 6820887514, 13784976732, 28189089684

Offset: 25

Alois P. Heinz, May 23 2014

nonn

First odd term is a(83) = 81415078620107974921.

			a(25) = 120 = 5!: all permutations of {1,3,5,7,9}.

Alois P. Heinz, Table of n, a(n) for n = 25..500

Column k=5 of A242626.

cp's OEIS Frontend

A242844 Number of compositions of n with difference 4 between the number of odd parts and the number of even parts, both counted without multiplicity.

Views

Author

Keywords

Comments

Examples

Links

Crossrefs