

A219995


Decimal expansion of Sum_{n >= 1, b(n) != 1} 1/b(n)^n, where b(n) = A217626(n).


2



1, 3, 8, 1, 5, 9, 8, 0, 6, 6, 1, 0, 6, 1, 3, 8, 7, 3, 5, 1, 4, 8, 7, 0, 9, 0, 0, 1, 0, 6, 3, 0, 8, 6, 8, 3, 0, 4, 4, 8, 5, 5, 2, 7, 7, 2, 4, 4, 3, 5, 1, 0, 6, 6, 5, 9, 7, 7, 6, 6, 9, 3, 8, 2, 3, 0, 0, 7, 6, 5, 3, 1, 7, 8, 4, 9, 6, 1, 7, 3, 6, 5, 5, 6, 6, 9, 9, 2, 7, 4, 9, 4, 9, 2, 6, 6, 8, 1, 5, 0, 5, 1, 8, 5, 1, 6, 0, 3
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OFFSET

0,2


COMMENTS

Decimal expansion of the limit to which tends the difference between the series for 1/A217626(x) and the Gamma function evaluated for M, where 2<M and 1<=x<M!.  R. J. Cano, May 25 2017


LINKS



EXAMPLE

0.138159806610613873514870900106308683044855277244...


MATHEMATICA

First@ RealDigits@ N[#, 108] &@ Total@Map[1/#1^#2 & @@ # &, DeleteCases[ MapIndexed[{#1, First@ #2} &, #], _?(First@ # == 1 &)]] &@ Differences@ Flatten@ Table[(Drop[#, If[m == 1, 0, (m  1)!]]  First@ #)/9 &@ Map[FromDigits, Permutations@ Range@ m], {m, 7}] (* Michael De Vlieger, May 25 2017, after JeanFrançois Alcover at A215940 *)


PROG

(PARI) See LINKS.


CROSSREFS



KEYWORD



AUTHOR



EXTENSIONS



STATUS

approved



