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A205395 The index j<k such that n divides s(k)-s(j) for some j, where s(j)=ceiling(j^2/2), and k is the least index for which such an index j exists. 3
1, 1, 2, 1, 4, 2, 1, 3, 3, 4, 2, 1, 3, 6, 2, 2, 1, 3, 5, 3, 4, 10, 2, 1, 7, 12, 3, 5, 8, 2, 1, 6, 4, 16, 2, 3, 5, 18, 2, 1, 12, 4, 6, 9, 3, 22, 7, 2, 1, 5, 14, 11, 4, 6, 6, 3, 9, 28, 2, 1, 19, 30, 10, 4, 8, 8, 3, 15, 20, 2, 1, 5, 7, 36, 10, 17, 4, 10, 3, 3 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,3

COMMENTS

For a guide to related sequences, see A204892.

LINKS

Table of n, a(n) for n=1..80.

MATHEMATICA

(See the program at A205394.)

CROSSREFS

Cf. A205394, A204892.

Sequence in context: A088423 A006839 A268267 * A243070 A243060 A286321

Adjacent sequences:  A205392 A205393 A205394 * A205396 A205397 A205398

KEYWORD

nonn

AUTHOR

Clark Kimberling, Jan 27 2012

STATUS

approved

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Last modified July 15 23:32 EDT 2020. Contains 335774 sequences. (Running on oeis4.)