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A340936
Central terms of triangle A340934.
1
1, 1, 13, 268, 7611, 271091, 11458077, 559212195, 31090619367, 1954991831572, 138396327557838, 10984169879821011, 972752618602202371, 95584630350151739468, 10357080966486768792724, 1229760196915952474094457, 159050261111140771987720585, 22284427776753810724534759774
OFFSET
0,3
PROG
(PARI) {A340934(n, k) = my(A=1); for(i=1, n, A = sum(m=0, n, x^m/(1 - x*y*A^(2*m) +x*O(x^n))) ); polcoeff(polcoeff(A, n, x), k, y)}
for(n=0, 10, print1(A340934(2*n, n), ", "))
(PARI) {A340934(n, k) = my(A=1); for(i=1, n, A = sum(m=0, n, x^m*y^m/(1 - x*A^(2*m) +x*O(x^n))) ); polcoeff(polcoeff(A, n, x), k, y)}
for(n=0, 20, print1(A340934(2*n, n), ", "))
CROSSREFS
Cf. A340934.
Sequence in context: A142811 A034833 A101004 * A142931 A142262 A364243
KEYWORD
nonn
AUTHOR
Paul D. Hanna, Jan 28 2021
STATUS
approved