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A355215 E.g.f. A(x) satisfies A'(x) = 1 + A(-2 * log(1-x))/2. 1
1, 1, 3, 20, 260, 6304, 281096, 23095768, 3534364152, 1022066008944, 566769639800624, 610404514456781600, 1289451019913455115232, 5380706591109919979010304, 44564091018102742571511384320, 734792950974385564221797653105152 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,3
LINKS
FORMULA
a(1) = 1; a(n+1) = Sum_{k=1..n} 2^(k-1) * |Stirling1(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, 2^(j-1)*abs(stirling(i, j, 1))*v[j])); v;
CROSSREFS
Sequence in context: A197322 A197975 A210906 * A193194 A320945 A166232
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Jun 24 2022
STATUS
approved

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Last modified March 28 10:31 EDT 2024. Contains 371240 sequences. (Running on oeis4.)