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A355203
E.g.f. A(x) satisfies A'(x) = 1 + A(1 - exp(-x)).
3
1, 1, 0, -2, 4, 10, -150, 838, 222, -82616, 1408364, -13862308, -18747672, 5307622274, -170657860276, 3561218897884, -33756455501714, -1481233045213718, 116803294574962288, -5108843717328225572, 157037998518149186728, -1976107915155933805542
OFFSET
1,4
LINKS
FORMULA
a(1) = 1; a(n+1) = Sum_{k=1..n} (-1)^(n-k) * Stirling2(n,k) * a(k).
PROG
(PARI) a_vector(n) = my(v=vector(n)); v[1]=1; for(i=1, n-1, v[i+1]=sum(j=1, i, (-1)^(i-j)*stirling(i, j, 2)*v[j])); v;
CROSSREFS
KEYWORD
sign
AUTHOR
Seiichi Manyama, Jun 24 2022
STATUS
approved