OFFSET
0,3
LINKS
Daniel Suteu, Table of n, a(n) for n = 0..41
Lucas A. Brown, Python program.
Eric Weisstein's World of Mathematics, Prime Factor
Eric Weisstein's World of Mathematics, Tetrahedral Number
PROG
(PARI) a(n) = if(n==1, return(-1)); for(k=1, oo, my(t=(k*(k+1)*(k+2))\6); if(bigomega(t) == n, return(k))); \\ Daniel Suteu, Dec 30 2022
CROSSREFS
KEYWORD
sign
AUTHOR
Ilya Gutkovskiy, Dec 16 2022
EXTENSIONS
a(27)-a(34) from Daniel Suteu, Dec 30 2022
a(35)-a(38) from Lucas A. Brown, Sep 11 2024
STATUS
approved