|
|
A032297
|
|
"EFJ" (unordered, size, labeled) transform of 2,2,2,2,...
|
|
3
|
|
|
1, 2, 2, 14, 18, 62, 566, 1094, 3954, 17150, 242982, 573014, 2717094, 11553622, 74420950, 1427746334, 4237820914, 22743623742, 116389345094, 709019767190, 5556385327158, 152916116876390, 524244823214950, 3357960498345390, 18667422415920486, 129591208469013462
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
0,2
|
|
LINKS
|
|
|
FORMULA
|
|
|
PROG
|
(PARI) seq(n)={Vec(serlaplace(prod(k=1, n, 1 + 2*x^k/k! + O(x*x^n))))} \\ Andrew Howroyd, Sep 11 2018
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
|
|
EXTENSIONS
|
a(0)=1 prepended and terms a(23) and beyond from Andrew Howroyd, Sep 11 2018
|
|
STATUS
|
approved
|
|
|
|