A063185 Engel expansion of Sum_{k>=0} 1/(2 + k)^k.

1, 3, 5, 15, 20, 124, 141, 1085, 1221, 5267, 9814, 9899, 179888, 531293, 43914936, 59108249, 129482155, 290253117, 297264974, 329981693, 515700524, 1791622856, 29237782307, 289017844013, 2187297805011, 20282473409970

Offset

1,2

Comments

Shgz(2) = 1.4046684715031192197179531135647252212...

Links

Table of n, a(n) for n=1..26.

Mathematica

ToEngel[ x_, n_Integer ] := Rest@First@Transpose@NestList[ {Ceiling[ 1/# ], #}&[ Times@@#-1 ]&, {1, Abs[ x ]+1}, n ]

Crossrefs

Cf. A006784 for definition of Engel expansion.

Sequence in context: A018374 A290297 A344991 * A208854 A165260 A201874

Adjacent sequences: A063182 A063183 A063184 * A063186 A063187 A063188

Keyword

nonn,easy

Author

Olivier Gérard, Jul 10 2001

Status

approved