A039731 a(n)=MAX{p(n) mod q, where prime q < p(n)=n-th prime}.

1, 2, 2, 4, 6, 6, 8, 10, 12, 14, 18, 18, 20, 18, 24, 28, 30, 30, 34, 36, 38, 40, 42, 44, 48, 50, 48, 50, 54, 60, 64, 66, 68, 70, 72, 78, 80, 78, 84, 82, 84, 94, 96, 96, 98, 104, 110, 100, 102, 106, 112, 114, 124, 126, 126, 132, 134, 138

Offset

2,2

Comments

Sequence lists the maxima of rows of triangle A207409. - Michel Marcus, Oct 01 2013

Links

Charles R Greathouse IV, Table of n, a(n) for n = 2..10000

Prog

(PARI) a(n) = {maxp = 0; for (i = 1, n-1, mp = prime(n) % prime(i); maxp = max(mp, maxp); ); maxp; } \\ Michel Marcus, Oct 01 2013
(PARI) P=primes(100); vector(#P, i, mx=0; for(j=1, i-1, mx=max(P[i]%P[j], mx)); mx)[2..#P] \\ Charles R Greathouse IV, Oct 01 2013

Crossrefs

Sequence in context: A178883 A109832 A309075 * A005341 A137268 A008130

Adjacent sequences: A039728 A039729 A039730 * A039732 A039733 A039734

Keyword

nonn

Author

Clark Kimberling

Status

approved