A076988 Smallest Fibonacci number of the form n*k + 1 with k>0.

2, 3, 13, 5, 21, 13, 8, 89, 55, 21, 34, 13, 144, 1597, 63245986, 28657, 987, 55, 1597, 21, 610, 89, 17711, 28657, 4807526976, 514229, 55, 1597, 233, 165580141, 514229, 2971215073, 34, 987, 17711, 28657, 14930352, 1597, 139583862445, 956722026041

Offset

1,1

Links

Table of n, a(n) for n=1..40.

Example

a(3) = 13 as 13 =3*4 + 1 is the smallest such Fibonacci number.

Maple

with(combinat, fibonacci):a[1] := 2:for n from 2 to 75 do j := 3:while((fibonacci(j) mod n)<>1)do j := j+1:od:a[n] := fibonacci(j):od:seq(a[k], k=1..75);

Crossrefs

Sequence in context: A067523 A035515 A317716 * A128369 A087568 A087564

Adjacent sequences: A076985 A076986 A076987 * A076989 A076990 A076991

Keyword

nonn

Author

Amarnath Murthy, Oct 25 2002

Extensions

More terms from Sascha Kurz, Jan 26 2003

Status

approved