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A305861
a(n) = 32*3^n - 2^(n+5) + 5.
4
5, 37, 165, 613, 2085, 6757, 21285, 65893, 201765, 613477, 1856805, 5603173, 16875045, 50756197, 152530725, 458116453, 1375397925, 4128290917, 12389067045, 37175589733, 111543546405, 334664193637, 1004059689765, 3012313287013, 9037208296485, 27112161760357
OFFSET
0,1
LINKS
Takao Komatsu, On poly-Euler numbers of the second kind, arXiv:1806.05515 [math.NT], 2018, page 11 (Lemma 3.4).
FORMULA
G.f.: (5 + 7*x - 2*x^2)/((1 - x)*(1 - 2*x)*(1 - 3*x)).
a(n) = 6*a(n-1) - 11*a(n-2) + 6*a(n-3).
MATHEMATICA
Table[32 3^n - 2^(n + 5) + 5, {n, 0, 30}]
PROG
(Magma) [32*3^n-2^(n+5)+5: n in [0..30]];
(PARI) a(n) = 32*3^n - 2^(n+5) + 5; \\ Michel Marcus, Jul 03 2018
CROSSREFS
Cf. A000918.
Sequence in context: A347321 A006468 A144954 * A146195 A358407 A273213
KEYWORD
nonn,easy
AUTHOR
Vincenzo Librandi, Jun 15 2018
STATUS
approved