A049190 Start with 1. Convert to base 2, describe it in base 2, convert to base 10.

1, 3, 5, 59, 245, 2491, 235253, 127756731, 330567489269, 258479716298484155, 36823182192123209878050549, 25576412117054296344209353299113896379, 10994511204169842163496446583221775727830456269734123253

Offset

1,2

Comments

a(n) is A001387(n) converted to base 10. - Nathan Fox, Mar 07 2018

Links

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

Example

1 -> One 1 -> 11 -> 3;
3 -> 11 -> Two 1's -> 101 -> 5;
5 -> 101 -> One 1, One 0, One 1 -> 111011 -> 59;
etc.

Crossrefs

Cf. A005150, A001387.

Sequence in context: A155121 A106914 A337924 * A174920 A158314 A249011

Adjacent sequences: A049187 A049188 A049189 * A049191 A049192 A049193

Keyword

nonn,base

Author

Olivier Gérard

Extensions

Definition and Example corrected by Nathan Fox, Mar 07 2018

Status

approved