1,2

Number of V-Toothpicks added to the V-Toothpick sieve at the nth round.

Cf. A139250, A139251, A160121, A160173, A161206, A161329, A161331.

Sequence in context: A055954 A161602 A055956 this_sequence A076428 A055958 A069816

Adjacent sequences: A161204 A161205 A161206 this_sequence A161208 A161209 A161210

more,nonn

Omar E. Pol (info(AT)polprimos.com), Jun 08 2009