A037919 Trajectory of 4 under prime factor concatenation procedure.

4, 2, 2, 2, 11, 211

Offset

0,1

Links

Table of n, a(n) for n=0..5.

Patrick De Geest, Home Primes

Example

May be regarded as the rows of an irregular triangle:
4
2 2
2 11
211. - N. J. A. Sloane, Jun 15 2022

Crossrefs

Cf. A037273.

Sequence in context: A364686 A341859 A058634 * A049849 A112349 A231821

Adjacent sequences: A037916 A037917 A037918 * A037920 A037921 A037922

Keyword

fini,full,nonn,tabf,base

Author

Jeff Burch

Extensions

Edited by Charles R Greathouse IV, Apr 30 2010

Status

approved