A061985 Values which can occur in sequence b(k) = 1 + b(floor(k/2)) + b(floor(k/3)) with b(0) = 0, i.e., in A061984.

0, 1, 2, 3, 4, 6, 7, 8, 11, 12, 15, 19, 20, 21, 27, 32, 36, 37, 47, 48, 54, 64, 65, 80, 85, 92, 112, 113, 114, 135, 150, 158, 193, 199, 200, 228, 263, 264, 273, 329, 350, 351, 387, 457, 464, 474, 558, 614, 615, 616, 661, 787, 815, 826, 946, 1072, 1073, 1081, 1136

Offset

0,3

Links

Reinhard Zumkeller, Table of n, a(n) for n = 0..100

Formula

a(n) = a(n-1) + C(A022328(n) + A022329(n), A022328(n)). - David Wasserman, Nov 17 2005

Prog

(Haskell)
a061985 n = a061985_list !! n
a061985_list = f (-1) a061984_list where
   f u (v:vs) = if v == u then f u vs else v : f v vs
-- Reinhard Zumkeller, Jan 11 2014

Crossrefs

Cf. A061984, A061986, A061987.

Sequence in context: A192047 A274281 A050116 * A352804 A102826 A191381

Adjacent sequences: A061982 A061983 A061984 * A061986 A061987 A061988

Keyword

nonn

Author

Henry Bottomley, May 24 2001

Status

approved