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A283831
Take every fourth term of A104203.
2
1, -12, 3024, -4390848, 21224560896, -257991277243392, 6628234834692624384, -319729080846260095008768, 26571747463798134334265819136, -3564202847752289659513902717468672, 733070216072136922924207670741034860544, -221829664053602095461018886102097997267468288
OFFSET
0,2
LINKS
PROG
(PARI) x='x+O('x^66); v=Vec(serlaplace(serreverse( intformal( 1/sqrt(1-x^4))))); vector(#v\4, n, v[4*n-3]) \\ Joerg Arndt, Mar 24 2017
CROSSREFS
Cf. A104203.
Sequence in context: A271515 A231042 A370300 * A268008 A222922 A268048
KEYWORD
sign
AUTHOR
N. J. A. Sloane, Mar 20 2017
EXTENSIONS
a(9) - a(11) from Vincenzo Librandi, Mar 24 2017
STATUS
approved