A200261 - OEIS

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A200261

a(n) = 1 iff n-th prime has an even digit sum.

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

	OFFSET	`1`
	COMMENTS	`Characteristic function of A200259.`
	LINKS	`T. D. Noe, Table of n, a(n) for n = 1..1000`
	MATHEMATICA	`Table[1 - Mod[Total[IntegerDigits[Prime[n]]], 2], {n, 100}] (* T. D. Noe, Nov 21 2011 *)`
	PROG	`(Magma) [IsEven(&+Intseq(NthPrime(n))) select 1 else 0: n in [1..100]]; // Bruno Berselli, Nov 15 2011`
	CROSSREFS	`Cf. A200259, A200263.` `Sequence in context: A303561 A284680 A004555 * A288855 A138711 A285617` `Adjacent sequences: A200258 A200259 A200260 * A200262 A200263 A200264`
	KEYWORD	`nonn,base,changed`
	AUTHOR	`N. J. A. Sloane, Nov 15 2011`
	STATUS	`approved`

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Last modified March 26 02:36 EDT 2023. Contains 361529 sequences. (Running on oeis4.)