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A331768
El Gradechi's hybrid coefficients alpha^{4,4}_{2n}.
3
480, 4800, 16800, 40320, 79200, 137280, 218400, 326400, 465120, 638400, 850080, 1104000, 1404000, 1753920, 2157600, 2618880, 3141600, 3729600, 4386720, 5116800, 5923680, 6811200, 7783200, 8843520, 9996000, 11244480, 12592800, 14044800, 15604320, 17275200, 19061280, 20966400, 22994400
OFFSET
0,1
COMMENTS
See El Gradechi (2013) page 426 for precise definition.
LINKS
Amine M. El Gradechi, The Lie theory of certain modular form and arithmetic identities, The Ramanujan Journal 31.3 (2013): 397-433.
FORMULA
a(n) = 480 * binomial(3 + 2*n, 3) = 480 * A000447(n+1). - Robin Visser, Jul 24 2023
PROG
(Magma) [480*Binomial(3 + 2*n, 3) : n in [0..100]]; // Robin Visser, Jul 24 2023
(PARI) a(n) = 480*binomial(3 + 2*n, 3); \\ Robin Visser, Jul 24 2023
CROSSREFS
KEYWORD
nonn
AUTHOR
N. J. A. Sloane, Feb 08 2020
EXTENSIONS
More terms from Robin Visser, Jul 24 2023
STATUS
approved