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A049227
Sigma(n) / d(n) is a perfect square associated with A049226.
3
36, 144, 196, 400, 900, 1764, 3136, 2304, 3844, 4900, 12100, 7056, 13689, 9216, 6400, 15876, 25600, 44100, 93636, 57600, 32400, 69696, 81796, 94864, 57600, 213444, 72900, 152100, 152100, 360000, 230400, 260100, 298116, 435600, 298116, 254016, 291600, 656100
OFFSET
1,1
LINKS
FORMULA
a(n) = A000203(A049226(n)) / A000005(A049226(n)). - Amiram Eldar, Aug 15 2019
EXAMPLE
a(27) = 72900 = 270^2 is a term since sigma(A049226(27))/d(A049226(27)) = 72900.
CROSSREFS
KEYWORD
easy,nonn
AUTHOR
EXTENSIONS
Offset corrected and more terms added by Amiram Eldar, Aug 15 2019
STATUS
approved