1,2

Number of toothpicks added at the nth round.

Cf. A139251, A152980, A160161, A161210, A161213, A161215, A161217.

Sequence in context: A129980 A126786 A154614 this_sequence A161368 A023978 A152488

Adjacent sequences: A161208 A161209 A161210 this_sequence A161212 A161213 A161214

more,nonn

Omar E. Pol (info(AT)polprimos.com), Jun 06 2009