Number of compositions of n with difference 4 between the number of odd parts and the number of even parts, both counted without multiplicity.
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.
Terms
- a(0) =24a(1) =60a(2) =144a(3) =330a(4) =684a(5) =1374a(6) =2688a(7) =5106a(8) =9532a(9) =17208a(10) =30856a(11) =55296a(12) =97812a(13) =175926a(14) =316928a(15) =581352a(16) =1083674a(17) =2064346a(18) =4012614a(19) =7957492a(20) =16061208a(21) =32880201a(22) =68032764a(23) =141844516a(24) =297086796a(25) =623794222a(26) =1310685218a(27) =2752470170a(28) =5772036942a(29) =12079693049
External references
- oeis: A242844