A158251 a(n)=S(S(n)) where S=A054353 gives the partial sums of Kolakoski sequence.

1, 5, 7, 9, 10, 14, 15, 19, 21, 23, 25, 29, 30, 32, 34, 36, 37, 41, 43, 45, 47, 49, 50, 54, 55, 59, 61, 63, 64, 68, 69, 71, 73, 75, 77, 81, 82, 86, 88, 90, 91, 95, 96, 100, 102, 104, 106, 108, 109, 113, 114, 116, 118, 122, 123, 127, 129, 131, 132, 136, 137, 141, 143, 145

Offset

1,2

Links

Table of n, a(n) for n=1..64.

Formula

a(n) = Sum_{k=1..n} (1/2)*(3+(-1)^k)*A000002(k) = (3/2)*A054353(n)+(1/2)*A074272(n).

Crossrefs

Cf. A000002, A054353, A074272.

Partial sums of A088570.

Sequence in context: A358314 A138579 A189703 * A212191 A336122 A241853

Adjacent sequences: A158248 A158249 A158250 * A158252 A158253 A158254

Keyword

nonn

Author

Benoit Cloitre, Mar 15 2009

Status

approved