A213360 Snowflake sequence starting with six E-toothpicks.

0, 6, 12, 18, 36, 42, 60, 78, 96, 126, 144, 174, 216, 222, 240, 258, 288, 342, 372, 450, 492, 546, 624, 666, 732, 810, 828, 870, 912, 966, 1056, 1122, 1248, 1338, 1428, 1530, 1596, 1674, 1764, 1854, 1944, 1998, 2064, 2178, 2256, 2382, 2508, 2610, 2712, 2850, 2952, 3114, 3216, 3330, 3492, 3618, 3780, 3894, 3996, 4098

Offset: 0

Author

Omar E. Pol, Dec 16 2012

Keywords

• nonn

Comments

The structure is the same as A161330 but without the two central E-toothpicks. All terms are multiples of 6.

Links

• N. J. A. Sloane, A single E-toothpick
• N. J. A. Sloane, Catalog of Toothpick and Cellular Automata Sequences in the OEIS
• Index entries for sequences related to toothpick sequences

Crossrefs

Cf. A008588, A139250, A161328, A161330, A161336.

Formula

a(n) = A161330(n+1) - 2 = 6*A161336(n).