id:A082772 - OEIS Search Results

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Integers n such that there exists at least one divisor p of n, 1 < p < n, such that p divides n and p+1 divides n+1.

+0
2

8, 14, 15, 20, 24, 26, 27, 32, 35, 38, 39, 44, 48, 50, 51, 56, 62, 63, 64, 65, 68, 74, 75, 80, 84, 86, 87, 90, 92, 95, 98, 99, 104, 110, 111, 116, 119, 120, 122, 123, 124, 125, 128, 132, 134, 135, 140, 143, 144, 146, 147, 152, 155, 158, 159, 164, 168, 170, 171, 174 (list; graph; listen)

	OFFSET	`1,1`
	EXAMPLE	`24 is contained in sequence a since 4 divides 24 and 5 divides 25`
	PROGRAM	`Programmed in C++ for (int a = 1; a < 200; a++) for (int b = 2; b < a; b++) if ((a%b==0)&&((a+1)%(b+1)==0)) cout << a << ", "; // outputs a`
	CROSSREFS	`Sequence in context: A109847 A122459 A092537 this_sequence A103338 A050681 A084021` `Adjacent sequences: A082769 A082770 A082771 this_sequence A082773 A082774 A082775`
	KEYWORD	`easy,nonn`
	AUTHOR	`Anne M. Donovan (anned3005(AT)aol.com) May 21 2003`

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Last modified December 17 23:40 EST 2009. Contains 171025 sequences.

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