A251553 Numbers k such that A098550(k) is a multiple of 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

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