The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A240115 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A240115

Schoenheim lower bound L(n,4,2).
(history; published version)

#21 by Nathaniel Johnston at Wed Jan 10 20:17:54 EST 2024

STATUS

editing

approved

#20 by Nathaniel Johnston at Wed Jan 10 20:17:51 EST 2024

KEYWORD

nonn,easy,changed

STATUS

approved

editing

#19 by Nathaniel Johnston at Wed Jan 10 20:10:51 EST 2024

STATUS

editing

approved

#18 by Nathaniel Johnston at Wed Jan 10 20:10:37 EST 2024

COMMENTS

Only differs from A011976 when n = 7, 9, 10, or 19. - Nathaniel Johnston, Jan 10 2024

FORMULA

a(n) = ceiling((n/4)*ceiling((n-1)/3)). - Nathaniel Johnston, Jan 10 2024

STATUS

approved

editing

#17 by Peter Luschny at Sat Jan 26 14:27:15 EST 2019

STATUS

proposed

approved

#16 by Jean-François Alcover at Sat Jan 26 10:54:11 EST 2019

STATUS

editing

proposed

#15 by Jean-François Alcover at Sat Jan 26 10:54:07 EST 2019

MATHEMATICA

schoenheim[n_, k_, t_] := Module[{lb = 1, n1 = n, k1 = k, t1 = t}, n1 += 1 - t1; k1 += 1 - t1; While[t1 > 0, lb = Ceiling[(lb*n1)/k1]; t1--; n1++; k1++]; lb];

Table[schoenheim[n, 4, 2], {n, 4, 100}] (* Jean-François Alcover, Jan 26 2019, from PARI *)

STATUS

approved

editing

#14 by Michel Marcus at Tue Oct 28 13:08:17 EDT 2014

STATUS

reviewed

approved

#13 by Joerg Arndt at Tue Oct 28 12:56:07 EDT 2014

STATUS

proposed

reviewed

#12 by Michel Marcus at Tue Oct 28 12:45:08 EDT 2014

STATUS

editing

proposed