A377656 Cogrowth sequence of the 12-element dicyclic group Dic12 = .

1, 0, 0, 0, 1, 5, 7, 7, 19, 39, 95, 187, 323, 663, 1351, 2755, 5579, 10863, 21679, 43643, 87411, 175399, 349591, 697843, 1397787, 2796255, 5595135, 11187435, 22362691, 44735255, 89480167, 178966627, 357936619, 715798479, 1431613775, 2863328347, 5726658323

Offset: 0

Author

Sean A. Irvine, Nov 03 2024

Keywords

• nonn
• easy

Examples

			a(5) = 5 corresponds to the words SSSTT = TSSST = TTSSS = STTSS = SSTTS = 1.
		

Crossrefs

Cf. A007583 (D6), A377626 (A4), A377627 (C6 x C2).