A118952 - OEIS

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A118952

Characteristic function of numbers that can be written as p+2^k, where p is prime and p less than 2^k (A118957).

0, 0, 0, 0, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 1, 1, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 1, 0, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0, 1, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,1`
	COMMENTS	`0 <= a(n) <= 1, a(n) <= A109925(n);` `a(A118956(n)) = 0, a(A118957(n)) = 1;` `A118953(n) = a(A000040(n)).`
	LINKS	`Index entries for characteristic functions`
	CROSSREFS	`Sequence in context: A011667 A144195 A011759 * A011668 A011670 A011666` `Adjacent sequences: A118949 A118950 A118951 * A118953 A118954 A118955`
	KEYWORD	`nonn`
	AUTHOR	`Reinhard Zumkeller (reinhard.zumkeller(AT)gmail.com), May 07 2006`

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Last modified February 16 01:56 EST 2012. Contains 205860 sequences.