A078450 a(n) = product of terms in n-th row of A078448.

1, 6, 140, 10296, 1560090, 818269800, 890504276970, 578105086816530, 845098382127164340, 1345577210752717337010, 2349420395175736366400280, 4072812804055080385050520770, 16954222832305267550769863845710

Offset

1,2

Links

Table of n, a(n) for n=1..13.

Prog

(PARI) {s=[1]; for (n=2, 14, print1(prod(i=1, n-1, s[i]), ", "); a=s[n-1]; s=[a+1]; for(j=2, n, k=s[j-1]+1; c=1; while(c>0, b=1; for(i=1, matsize(s)[2], if(gcd(k, s[i])>1, b=0)); if(b==0, k++, c=0)); s=concat(s, k)))}

Crossrefs

Cf. A078447, A078448, A078449.

Sequence in context: A322625 A012785 A012818 * A193502 A059488 A241015

Adjacent sequences: A078447 A078448 A078449 * A078451 A078452 A078453

Keyword

nonn

Author

Amarnath Murthy, Nov 27 2002

Extensions

Edited and extended by Klaus Brockhaus, Dec 10 2002

Status

approved