Number of partitions of 2n free of multiples of 5. All odd parts occur with multiplicity 2 or 4. the even parts occur at most twice.
A103257
Number of partitions of 2n free of multiples of 5. All odd parts occur with multiplicity 2 or 4. the even parts occur at most twice.
Terms
- a(0) =1a(1) =2a(2) =4a(3) =6a(4) =10a(5) =14a(6) =20a(7) =28a(8) =40a(9) =54a(10) =72a(11) =96a(12) =126a(13) =164a(14) =212a(15) =272a(16) =346a(17) =436a(18) =548a(19) =684a(20) =850a(21) =1052a(22) =1296a(23) =1588a(24) =1940a(25) =2362a(26) =2864a(27) =3462a(28) =4172a(29) =5012
External references
- oeis: A103257