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A251553 Numbers k such that A098550(k) is a multiple of 3. 3
3, 5, 7, 10, 12, 17, 19, 21, 24, 26, 28, 31, 33, 37, 39, 42, 44, 47, 49, 52, 55, 57, 59, 64, 66, 69, 71, 73, 75, 78, 81, 83, 85, 90, 92, 95, 97, 100, 102, 104, 107, 109, 111, 113, 115, 117, 120, 123, 129, 131, 133, 136, 138, 140, 143, 145, 149, 152, 155, 157, 159, 162, 164, 169, 171, 173, 176, 178 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This sequence is now known to be infinite.

LINKS

Chai Wah Wu, Table of n, a(n) for n = 1..10000

PROG

(Haskell)

a251553 n = a251553_list !! (n-1)

a251553_list = filter ((== 0) . flip mod 3 . a098550) [1..]

-- Reinhard Zumkeller, Dec 19 2014

CROSSREFS

Cf. A098550.

Second row of array A251716.

Sequence in context: A211266 A037030 A277719 * A075782 A050090 A152004

Adjacent sequences:  A251550 A251551 A251552 * A251554 A251555 A251556

KEYWORD

nonn

AUTHOR

N. J. A. Sloane, Dec 18 2014

STATUS

approved

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Last modified January 25 06:19 EST 2022. Contains 350565 sequences. (Running on oeis4.)