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A231990 First differences of Stanley sequence S(0,5) (A187843). 1
5, 1, 2, 1, 5, 1, 2, 10, 4, 1, 4, 2, 4, 1, 8, 14, 8, 1, 8, 7, 11, 1, 6, 2, 14, 29, 2, 11, 9, 3, 2, 11, 8, 13, 5, 4, 7, 6, 3, 24, 59, 9, 7, 1, 20, 5, 1, 8, 3, 33, 27, 11, 9, 12, 3, 2, 11, 9, 27, 4, 2, 5, 12, 1, 5, 16, 54, 80, 37, 15, 1, 6, 3, 33, 3, 17, 5, 9, 17, 1, 35, 32, 2, 72, 10, 3, 82, 6, 4, 6, 5, 2, 1, 5, 31, 14, 13 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

For known formulas of differences of other Stanley sequences see A093682.

LINKS

Ralf Stephan, Table of n, a(n) for n = 1..999

PROG

(PARI) NAP(sv, N)=local(v, vv, m, k, l, sl, vvl); sl=length(sv); vvl=min(N*N, 10^5); v=vector(N); vv=vector(vvl); for(k=1, sl, v[k]=sv[k]; for(l=1, k-1, vv[2*v[k]-v[l]]=1)); m=v[sl]+1; for(k=sl+1, N, while(m<=vvl&&vv[m], m=m+1); if(m>vvl, return(v)); for(l=1, k-1, sl=2*m-v[l]; if(sl<=vvl, vv[sl]=1)); vv[m]=1; v[k]=m); v

S05(n)=N=1000; NAP([0, 5], N)[n]

a(n)=S05(n+1)-S05(n)

CROSSREFS

Cf. A236269.

Sequence in context: A097413 A202352 A115038 * A010131 A176323 A260821

Adjacent sequences:  A231987 A231988 A231989 * A231991 A231992 A231993

KEYWORD

nonn

AUTHOR

Ralf Stephan, Jan 30 2014

STATUS

approved

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Last modified January 17 17:23 EST 2019. Contains 319250 sequences. (Running on oeis4.)