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A005128 Number of k for which n does not divide Stirling_2 subset numbers S(n, k). 1
1, 0, 2, 2, 4, 2, 5, 2, 8, 7, 7, 2, 10, 2, 9, 10, 16, 2, 16, 2, 16, 11, 13, 2, 20, 15, 13, 22, 20, 2, 13, 2, 32, 14, 11, 20, 32, 2, 18, 18, 33, 2, 33, 2, 26, 31, 20, 2, 44, 28, 34, 20, 31, 2, 47, 23, 38, 19, 18, 2, 42, 2, 15, 37, 64, 29, 37, 2, 33, 22, 43, 2, 58, 2, 26, 57, 40, 42 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,3

LINKS

Vincenzo Librandi, Table of n, a(n) for n = 0..10000

MATHEMATICA

Prepend[ Array[ Length[ Select[ Table[ StirlingS2[ #, k ]/#, {k, 0, #} ], !IntegerQ[ # ]& ] ]&, 100 ], 1 ]

CROSSREFS

Cf. A048993.

Sequence in context: A304442 A057567 A217895 * A187782 A129296 A300837

Adjacent sequences:  A005125 A005126 A005127 * A005129 A005130 A005131

KEYWORD

nonn

AUTHOR

Olivier Gérard

STATUS

approved

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Last modified November 16 00:11 EST 2018. Contains 317252 sequences. (Running on oeis4.)