OFFSET
1,2
COMMENTS
The number of terms in the n-th row = tau(n).
EXAMPLE
1
2 1
3 1
4 3 1
5 1
6 4 5 1
7 1
8 4 7 1
9 7 1
...
PROG
(PARI) print(1, ", "); for(i=2, 50, v=[1]; for(j=2, sigma(i, 0), forstep(k=i, 1, -1, if(sigma(k, 0)==j, v=concat(v, k); break))); forstep(l=length(v), 1, -1, print1(v[l], ", ")); print()) \\ Lambert Herrgesell (zero815(AT)googlemail.com), Mar 13 2006
CROSSREFS
KEYWORD
nonn,tabf
AUTHOR
Amarnath Murthy, Feb 03 2003
EXTENSIONS
More terms from Lambert Herrgesell (zero815(AT)googlemail.com), Mar 13 2006
Offset corrected by Andrew Howroyd, Sep 29 2024
STATUS
approved