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A355208
E.g.f. A(x) satisfies A'(x) = 1 + A(2 * log(1+x)).
2
1, 2, 6, 28, 236, 4400, 197552, 20430656, 4600591488, 2179887358272, 2130534442932416, 4243581375963409024, 17097951082212352465536, 138722374358947243721661440, 2260145794657531151029628653568, 73822509077371344216463442074629120
OFFSET
1,2
LINKS
FORMULA
a(1) = 1; a(n+1) = Sum_{k=1..n} 2^k * 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*stirling(i, j, 1)*v[j])); v;
CROSSREFS
KEYWORD
nonn
AUTHOR
Seiichi Manyama, Jun 24 2022
STATUS
approved