A363403 a(n) = (4^n - 2^n) / Clausen(n, 1).

0, 1, 2, 28, 8, 496, 96, 8128, 2176, 130816, 15872, 2096128, 6144, 33550336, 44736512, 536854528, 8421376, 8589869056, 86114304, 137438691328, 3331850240, 2199022206976, 127479578624, 35184367894528, 103104380928, 562949936644096, 750599926710272, 9007199187632128

Offset: 0

Author

Peter Luschny, Jun 08 2023

Keywords

• nonn

Crossrefs

Cf. A160014, A363402, A363395.

Programs

Maple

# Using function 'Clausen' from A160014.
a := n -> (4^n - 2^n) / Clausen(n, 1):
seq(a(n), n = 0..25);

Formula

a(n) = A020522(n) / A160014(n, 1).