Numbers k such that the symmetric representation of sigma(k) has only two parts and they meet at the center of the Dyck path.
A262259
Numbers k such that the symmetric representation of sigma(k) has only two parts and they meet at the center of the Dyck path.
Terms
- a(0) =3a(1) =10a(2) =78a(3) =136a(4) =666a(5) =820a(6) =1830a(7) =2628a(8) =4656a(9) =5886a(10) =6328a(11) =16290a(12) =18528a(13) =28920a(14) =32896a(15) =39340a(16) =48828a(17) =56616a(18) =62128a(19) =78606a(20) =80200a(21) =83436a(22) =88410a(23) =93528a(24) =100576a(25) =104196a(26) =135460a(27) =146070a(28) =166176a(29) =180300
External references
- oeis: A262259