This site is supported by donations to The OEIS Foundation.

 Please make a donation to keep the OEIS running. We are now in our 55th year. In the past year we added 12000 new sequences and reached 8000 citations (which often say "discovered thanks to the OEIS"). We need to raise money to hire someone to manage submissions, which would reduce the load on our editors and speed up editing. Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A267103 Row 3 of A265903; numbers that occur exactly three times in A004001. 3
 4, 15, 27, 30, 48, 54, 57, 61, 86, 96, 102, 105, 112, 115, 119, 124, 157, 172, 182, 188, 191, 202, 208, 211, 218, 221, 225, 233, 236, 240, 245, 251, 293, 314, 329, 339, 345, 348, 364, 374, 380, 383, 394, 400, 403, 410, 413, 417, 429, 435, 438, 445, 448, 452, 460, 463, 467, 472, 481, 484, 488, 493, 499, 506, 558 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS Numbers n for which A051135(n) = 3. LINKS Antti Karttunen, Table of n, a(n) for n = 1..8192 FORMULA a(n) = A087686(1+A266109(n)) = A087686(1+A087686(1+A188163(n))). PROG (Scheme, two implementations, the latter requiring also Antti Karttunen's IntSeq-library) (define (A267103 n) (A087686 (+ 1 (A266109 n)))) (define A267103 (MATCHING-POS 1 1 (lambda (n) (= 3 (A051135 n))))) CROSSREFS Column 3 of A265901, row 3 of A265903. Cf. A004001, A051135, A087686, A188163, A266109. Sequence in context: A061873 A017437 A281264 * A030553 A304567 A154493 Adjacent sequences:  A267100 A267101 A267102 * A267104 A267105 A267106 KEYWORD nonn AUTHOR Antti Karttunen, Jan 18 2016 STATUS approved

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

Last modified December 7 05:14 EST 2019. Contains 329839 sequences. (Running on oeis4.)