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!)
 A285526 Terms of A285524 that mark the beginning of four consecutive equal values. 2
 4, 12, 20, 27, 35, 43, 51, 59, 67, 74, 82, 90, 98, 106, 113, 121, 129, 137, 145, 153, 160, 168, 176, 184, 192, 200, 207, 215, 223, 231, 239, 246, 254, 262, 270, 278, 286, 293, 301, 309, 317 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 LINKS PROG (PARI) half(n) = if (n % 2, n\2, n/2 - 1); a285524(n) = {v = vector(half(n), d, d!*(d + 1)!*(2^(n-2*d-1)*stirling(n-d, d+1, 2))); w = vecsort(v, , 1); w[#w]; } lista(nn) = {v = vector(nn, n, a285524(n+3)); for (k=1, #v-4, if ((v[k] == v[k+1]) && (v[k] == v[k+2]) && (v[k] == v[k+3]), print1(v[k], ", ")); ); } CROSSREFS Cf. A285524, A285525. Sequence in context: A273215 A273277 A100717 * A321466 A227226 A242118 Adjacent sequences:  A285523 A285524 A285525 * A285527 A285528 A285529 KEYWORD nonn,more AUTHOR Michel Marcus, Apr 20 2017 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 15 04:23 EST 2019. Contains 329991 sequences. (Running on oeis4.)