A146111 Bell numbers (A000110) read mod 21.

1, 1, 2, 5, 15, 10, 14, 16, 3, 0, 13, 18, 10, 16, 19, 17, 20, 3, 7, 5, 7, 15, 9, 16, 3, 19, 19, 1, 17, 11, 12, 1, 17, 13, 18, 0, 16, 6, 4, 16, 10, 11, 2, 15, 10, 20, 19, 0, 6, 10, 18, 16, 4, 19, 20, 2, 0, 13, 20, 16, 18, 15, 16, 6, 19, 1, 13, 5, 17, 15, 4, 20, 7, 18, 15, 4, 12, 10, 13, 4, 5

Offset

0,3

Links

G. C. Greubel, Table of n, a(n) for n = 0..10000

W. F. Lunnon, P. A. B. Pleasants, and N. M. Stephens, Arithmetic properties of Bell numbers to a composite modulus I, Acta Arithmetica 35 (1979), pp. 1-16.

Formula

a(n+1784341) = a(n). - G. C. Greubel, Feb 02 2016

Mathematica

Mod[BellB[Range[0, 80]], 21] (* Harvey P. Dale, Sep 04 2012 *)

Crossrefs

Cf. A000110, A146108, A146109, A146110, A146112, A146113, A146114.

Sequence in context: A146106 A146113 A146112 * A146110 A336385 A146109

Adjacent sequences: A146108 A146109 A146110 * A146112 A146113 A146114

Keyword

nonn

Author

N. J. A. Sloane, Feb 07 2009

Status

approved