The OEIS Foundation is supported by donations from users of the OEIS and by a grant from the Simons Foundation.

 Please make a donation to keep the OEIS running. We are now in our 56th year. In the past year we added 10000 new sequences and reached almost 9000 citations (which often say "discovered thanks to the OEIS"). Other ways to donate

 Hints (Greetings from The On-Line Encyclopedia of Integer Sequences!)
 A129260 Column 1 of prime separator array A129258. 2
 1, 3, 5, 8, 11, 14, 17, 19, 24, 26, 30, 33, 37, 41, 43, 47, 50, 53, 57, 59, 62, 64, 70, 73, 79, 81, 84, 88, 91, 95, 101, 103, 107, 110, 112, 116, 121, 123, 129, 131, 135, 137, 141, 149, 151, 154, 157, 160, 163, 167, 170, 175, 178, 181, 186, 191, 193, 195, 197, 203 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,2 COMMENTS This contains the primes 3,5,11,17,19,37,41,43,47,53,... A129259 contains all primes not here. LINKS FORMULA A129258 is the sequence T(1,n) defined as follows. T(1,1)=1. For n>=1, let S(n)={(i,j): 1<=i<=n and 1<=j<=n}. Once T(i,j) is defined on S(n), define T(1,n+1)=least positive integer (l.p.i.) not among T(i,j) for (i,j) in S(n); T(n+1,1)=l.p.i. not among T(i,j) for (i,j) in S(n) and not T(1,n+1); T(m,n+1)=T(m,1)*T(1,n+1) for m=2,3,...,n+1; T(n+1,m)=T(n+1,1)*T(1,m) for m=2,3,...,n+1. EXAMPLE Column 1 of the array A129258 with northwest corner 1 2 4 7 9 13 15 18 3 6 12 21 27 39 45 54 5 10 20 35 45 65 75 90 8 16 32 56 72 104 120 144 11 22 44 77 99 143 165 198 CROSSREFS Cf. A129258, A129259. Sequence in context: A022852 A180124 A095375 * A076829 A084505 A084555 Adjacent sequences:  A129257 A129258 A129259 * A129261 A129262 A129263 KEYWORD nonn AUTHOR Clark Kimberling, Apr 06 2007 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 November 23 17:10 EST 2020. Contains 338595 sequences. (Running on oeis4.)