A265909 Submain diagonal of array A265903: a(n) = A265903(n+1, n).
2, 15, 58, 126, 475, 1006, 2036, 4093, 16006, 32584, 65402, 130934, 262095, 524251, 1048554, 2097148
Offset: 1
Formula
a(n) = A265903(n+1, n).
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.