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Numerator of Euler(n, 4/29).
0

%I #9 Nov 10 2022 07:44:04

%S 1,-21,-100,21861,94100,-18595101,-238414300,266114768997,

%T 1136583415700,-408151256561811,-8715547003445500,7651351789288390911,

%U 98030183011569197300,-50854432262478418037121,-1520291598515727192300700,7280049271077111239192485269

%N Numerator of Euler(n, 4/29).

%H Paul Barry, <a href="https://cs.uwaterloo.ca/journals/JIS/VOL12/Barry4/barry64.html">Symmetric Third-Order Recurring Sequences, Chebyshev Polynomials, and Riordan Arrays</a>, JIS 12 (2009) 09.8.6.

%o (PARI) a(n) = numerator(subst(eulerpol(n, 'x), 'x, 4/29)); \\ _Michel Marcus_, Nov 10 2022

%Y For denominators see A157252.

%K sign,frac

%O 0,2

%A _N. J. A. Sloane_, Nov 07 2009