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A115558
a(n) is the square root of A115557(n).
3
1, 7, 11, 13, 19, 23, 29, 31, 43, 47, 53, 73, 83, 97, 103, 113, 127, 157, 179, 197, 199, 223, 227, 233, 239, 241, 251, 257, 271, 281, 311, 316, 317, 333, 353, 389, 401, 409, 419, 421, 443, 449, 461, 467, 479, 491, 503, 509, 549, 563, 587, 593, 599, 617, 641
OFFSET
1,2
LINKS
FORMULA
The commutator [sigma, tau] is zero and a(n) is the square root of solutions. Both prime and composite numbers.
KEYWORD
nonn
AUTHOR
Labos Elemer, Jan 25 2006
STATUS
approved