login
A088027
Smallest square k such that k-1 is a squarefree number with n prime divisors.
1
4, 16, 196, 1156, 64516, 440896, 26173456, 340254916, 14809429636, 787326134596, 56199671262736, 3984666393117796, 468395620836767716, 9526636662047700196, 659973251187594258916, 205358215375529739638116
OFFSET
1,1
COMMENTS
Program for generating a(n) for large values of n is given is A088028.
EXAMPLE
a(4) = 1156 = 34^2 = 3*5*7*11 +1.
PROG
(PARI) a(n) = {i = 1; k = i^2; while (! issquarefree(k-1) || (omega(k-1) != n), i++; k = i^2; ); k; } \\ Michel Marcus, Apr 11 2014
CROSSREFS
Cf. A088028.
Sequence in context: A366818 A224802 A000513 * A271267 A333438 A232840
KEYWORD
nonn
AUTHOR
Amarnath Murthy, Sep 19 2003
EXTENSIONS
More terms from Ray Chandler, Oct 04 2003
Additional terms from Thomas Baruchel, Oct 11 2003
STATUS
approved