A077371 -id:A077371 - cp's OEIS frontend

A077372 Fibonacci numbers whose external digits form a Fibonacci number. Or Fibonacci numbers whose MSD and LSD form a Fibonacci number.

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89, 121393, 1836311903, 2504730781961, 10610209857723, 10284720757613717413913, 184551825793033096366333, 59425114757512643212875125, 155576970220531065681649693

Offset: 1

Amarnath Murthy, Nov 06 2002

Sequence can be easily generated up to >10000 terms with the appended Sage script. - Manfred Scheucher, Jun 02 2015

Manfred Scheucher, Table of n, a(n) for n = 1..100
Manfred Scheucher, Sage Script

Cf. A077371, A077373.

F=[fibonacci(i) for i in [0..200]]
[x for x in F if x<10 or (x>10 and (10*x.digits()[-1]+x.digits()[0]) in F)]
# Tom Edgar, Jun 03 2015

More terms from Lior Manor, Nov 06 2002

A077373 Fibonacci numbers whose external digits as well as internal digits form a Fibonacci number.

Original entry on oeis.org

0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89

Offset: 1

Amarnath Murthy, Nov 06 2002

Conjecture: sequence is finite. Is there any term > 89 in this sequence?

Tanya Khovanova, Non Recursions

Intersection of A077371 and A077372.

cp's OEIS Frontend

A077372 Fibonacci numbers whose external digits form a Fibonacci number. Or Fibonacci numbers whose MSD and LSD form a Fibonacci number.

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