A036067 A summarize Fibonacci sequence starting with a(0)=a(1)=0: summarize the previous two terms!.

0, 0, 20, 1220, 321120, 13423120, 1433424120, 4443424120, 8433423120, 187443422120, 28175443523120, 2827255433624120, 282716454443823120, 382726356443923120, 19382736256463823120, 29382756253483823120

Offset

0,3

Comments

From the 54th term the sequence goes into a cycle of 117 terms.

For n > 1, a(n) is of the form 2^(k+2) * 5 * r, where k is a nonnegative integer and r is a positive integer relatively prime to 10. Therefore, for n > 1, a(n) is a Zumkeller number (A083207). - Ivan N. Ianakiev, Mar 19 2020

Links

Table of n, a(n) for n=0..15.

Crossrefs

Cf. A036059.

Sequence in context: A042745 A363054 A158912 * A294191 A359645 A001451

Adjacent sequences: A036064 A036065 A036066 * A036068 A036069 A036070

Keyword

base,easy,nice,nonn

Author

Floor van Lamoen

Status

approved