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A039665 Sets of 4 consecutive numbers with equal number of divisors. 6
242, 243, 244, 245, 3655, 3656, 3657, 3658, 4503, 4504, 4505, 4506, 5943, 5944, 5945, 5946, 6853, 6854, 6855, 6856, 7256, 7257, 7258, 7259, 8392, 8393, 8394, 8395, 9367, 9368, 9369, 9370, 10983, 10984, 10985, 10986, 11605, 11606, 11607, 11608 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Taking the first entry in each set gives A006601.

REFERENCES

D. Wells, Curious and interesting numbers, Penguin Books, p. 134

LINKS

Table of n, a(n) for n=1..40.

CROSSREFS

Cf. A000005, A005237, A005238, A006601, A049051, A006558, A019273.

Sequence in context: A060110 A113468 A220089 * A259719 A023703 A184023

Adjacent sequences:  A039662 A039663 A039664 * A039666 A039667 A039668

KEYWORD

nonn

AUTHOR

Felice Russo

EXTENSIONS

More terms from Patrick De Geest, Nov 15 1999

STATUS

approved

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Last modified February 19 02:06 EST 2018. Contains 299330 sequences. (Running on oeis4.)