The OEIS is supported by the many generous donors to the OEIS Foundation.

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A200260 Numbers k such that k-th prime has an odd digit sum. 6
 2, 3, 4, 9, 10, 13, 14, 15, 18, 19, 23, 24, 30, 32, 33, 34, 36, 37, 40, 41, 43, 44, 45, 46, 48, 49, 50, 53, 56, 57, 60, 61, 64, 65, 66, 67, 68, 71, 72, 74, 75, 78, 79, 80, 82, 86, 87, 89, 90, 91, 93, 102, 105, 106, 108, 109, 110, 111, 116, 117, 118, 121, 124 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS T. D. Noe, Table of n, a(n) for n = 1..10000 MATHEMATICA Select[Range[1000], OddQ[Total[IntegerDigits[Prime[#]]]] &] (* T. D. Noe, Nov 21 2011 *) PROG (Magma) [ n: n in [1..162] | IsOdd(&+Intseq(NthPrime(n))) ]; // Bruno Berselli, Nov 15 2011 (PARI) isok(k) = sumdigits(prime(k)) % 2; \\ Michel Marcus, Jul 03 2021 CROSSREFS Cf. A119450, A200259 (complement). Sequence in context: A084368 A007498 A073338 * A190119 A357056 A273907 Adjacent sequences: A200257 A200258 A200259 * A200261 A200262 A200263 KEYWORD nonn,base AUTHOR N. J. A. Sloane, Nov 15 2011 STATUS approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

Last modified March 24 21:37 EDT 2023. Contains 361511 sequences. (Running on oeis4.)