OFFSET
2,2
COMMENTS
Except for the first three terms, sqrt(a(n)/400) is an integer. For all terms a(n), sqrt(a(n+1)/a(n)) is an integer.
LINKS
Nathaniel Johnston, Table of n, a(n) for n = 2..50
MAPLE
A177963 := proc(n) return factorial(ithprime(n)-3)^2: end: seq(A177963(n), n=2..10); # Nathaniel Johnston, May 28 2011
MATHEMATICA
((Prime[Range[2, 10]]-3)!)^2 (* Harvey P. Dale, Jun 28 2023 *)
CROSSREFS
KEYWORD
nonn,easy
AUTHOR
Giovanni Teofilatto, May 16 2010
EXTENSIONS
Offset corrected by Nathaniel Johnston, May 28 2011
STATUS
approved