A088464 Duplicate of A088463.
31, 61, 181, 283, 811, 1279, 1999, 2551, 3931, 4159, 5659, 6553, 8389, 9241, 9463
Offset: 5
This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
n=1 -> A001359(1)=3 -> A001359(3) = 11 = a(1). n=2 -> A001359(2)=5 -> A001359(5) = 29 = a(2). n=3 -> A001359(3)=11 -> A001359(11) = 137 = a(3).
a(k) = { for(x1=1,k, print1(twinl(twinl(x1))", ") ) }
twinl(n) = { c=0; x=1; while(c